Home / 20,915,729.40-31,373,594.10-19,480,838.70

Finding the Fourth Proportional to 20,915,729.40, 31,373,594.10 and 19,480,838.70

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Solution

The fourth proportional to 20,915,729.40, 31,373,594.10 and 19,480,838.70 is: 29,221,258.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,915,729.40 : 31,373,594.10 = 19,480,838.70 : x
  2. Step 2: Convert to fraction form
    20,915,729.40/31,373,594.10 = 19,480,838.70/x
  3. Step 3: Cross multiply
    20,915,729.40x = 31,373,594.10 × 19,480,838.70
  4. Step 4: Simplify right side
    20,915,729.40x = 611,183,926,101,371.62
  5. Step 5: Solve for x
    x = 611,183,926,101,371.62/20,915,729.40
  6. Step 6: Final answer
    x = 29,221,258.05

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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.