Home / 28,536,915.60-42,805,402.80-13,390,861.68

Finding the Fourth Proportional to 28,536,915.60, 42,805,402.80 and 13,390,861.68

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Solution

The fourth proportional to 28,536,915.60, 42,805,402.80 and 13,390,861.68 is: 20,086,306.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,536,915.60 : 42,805,402.80 = 13,390,861.68 : x
  2. Step 2: Convert to fraction form
    28,536,915.60/42,805,402.80 = 13,390,861.68/x
  3. Step 3: Cross multiply
    28,536,915.60x = 42,805,402.80 × 13,390,861.68
  4. Step 4: Simplify right side
    28,536,915.60x = 573,201,228,051,484.62
  5. Step 5: Solve for x
    x = 573,201,228,051,484.62/28,536,915.60
  6. Step 6: Final answer
    x = 20,086,306.32

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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.