Home / 21,527,442.80-29,715,068.76-12,828,343.76

Finding the Fourth Proportional to 21,527,442.80, 29,715,068.76 and 12,828,343.76

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Solution

The fourth proportional to 21,527,442.80, 29,715,068.76 and 12,828,343.76 is: 17,707,403.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,527,442.80 : 29,715,068.76 = 12,828,343.76 : x
  2. Step 2: Convert to fraction form
    21,527,442.80/29,715,068.76 = 12,828,343.76/x
  3. Step 3: Cross multiply
    21,527,442.80x = 29,715,068.76 × 12,828,343.76
  4. Step 4: Simplify right side
    21,527,442.80x = 381,195,116,905,316.94
  5. Step 5: Solve for x
    x = 381,195,116,905,316.94/21,527,442.80
  6. Step 6: Final answer
    x = 17,707,403.54

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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.