Home / 20,111,843.80-30,167,765.70-12,931,485.40

Finding the Fourth Proportional to 20,111,843.80, 30,167,765.70 and 12,931,485.40

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Solution

The fourth proportional to 20,111,843.80, 30,167,765.70 and 12,931,485.40 is: 19,397,228.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111,843.80 : 30,167,765.70 = 12,931,485.40 : x
  2. Step 2: Convert to fraction form
    20,111,843.80/30,167,765.70 = 12,931,485.40/x
  3. Step 3: Cross multiply
    20,111,843.80x = 30,167,765.70 × 12,931,485.40
  4. Step 4: Simplify right side
    20,111,843.80x = 390,114,021,700,170.81
  5. Step 5: Solve for x
    x = 390,114,021,700,170.81/20,111,843.80
  6. Step 6: Final answer
    x = 19,397,228.10

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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.