Home / 20,965,566.40-31,452,820.80-11,871,923.20

Finding the Fourth Proportional to 20,965,566.40, 31,452,820.80 and 11,871,923.20

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Solution

The fourth proportional to 20,965,566.40, 31,452,820.80 and 11,871,923.20 is: 17,810,416.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,965,566.40 : 31,452,820.80 = 11,871,923.20 : x
  2. Step 2: Convert to fraction form
    20,965,566.40/31,452,820.80 = 11,871,923.20/x
  3. Step 3: Cross multiply
    20,965,566.40x = 31,452,820.80 × 11,871,923.20
  4. Step 4: Simplify right side
    20,965,566.40x = 373,405,472,960,962.56
  5. Step 5: Solve for x
    x = 373,405,472,960,962.56/20,965,566.40
  6. Step 6: Final answer
    x = 17,810,416.65

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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.