Home / 20,785,249,544.20-31,177,874,316.30-12,499,871,777.80

Finding the Fourth Proportional to 20,785,249,544.20, 31,177,874,316.30 and 12,499,871,777.80

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Solution

The fourth proportional to 20,785,249,544.20, 31,177,874,316.30 and 12,499,871,777.80 is: 18,749,807,666.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,785,249,544.20 : 31,177,874,316.30 = 12,499,871,777.80 : x
  2. Step 2: Convert to fraction form
    20,785,249,544.20/31,177,874,316.30 = 12,499,871,777.80/x
  3. Step 3: Cross multiply
    20,785,249,544.20x = 31,177,874,316.30 × 12,499,871,777.80
  4. Step 4: Simplify right side
    20,785,249,544.20x = 389,719,431,258,113,835,008
  5. Step 5: Solve for x
    x = 389,719,431,258,113,835,008/20,785,249,544.20
  6. Step 6: Final answer
    x = 18,749,807,666.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.