Home / 21,357,811.56-29,465,644.95-15,789,428.76

Finding the Fourth Proportional to 21,357,811.56, 29,465,644.95 and 15,789,428.76

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Solution

The fourth proportional to 21,357,811.56, 29,465,644.95 and 15,789,428.76 is: 21,783,397.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,357,811.56 : 29,465,644.95 = 15,789,428.76 : x
  2. Step 2: Convert to fraction form
    21,357,811.56/29,465,644.95 = 15,789,428.76/x
  3. Step 3: Cross multiply
    21,357,811.56x = 29,465,644.95 × 15,789,428.76
  4. Step 4: Simplify right side
    21,357,811.56x = 465,245,701,805,478.75
  5. Step 5: Solve for x
    x = 465,245,701,805,478.75/21,357,811.56
  6. Step 6: Final answer
    x = 21,783,397.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.