Home / 20,915,725.40-31,373,588.10-19,480,834.70

Finding the Fourth Proportional to 20,915,725.40, 31,373,588.10 and 19,480,834.70

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Solution

The fourth proportional to 20,915,725.40, 31,373,588.10 and 19,480,834.70 is: 29,221,252.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,915,725.40 : 31,373,588.10 = 19,480,834.70 : x
  2. Step 2: Convert to fraction form
    20,915,725.40/31,373,588.10 = 19,480,834.70/x
  3. Step 3: Cross multiply
    20,915,725.40x = 31,373,588.10 × 19,480,834.70
  4. Step 4: Simplify right side
    20,915,725.40x = 611,183,683,721,987.12
  5. Step 5: Solve for x
    x = 611,183,683,721,987.12/20,915,725.40
  6. Step 6: Final answer
    x = 29,221,252.05

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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.