Home / 21,527,956.68-29,715,779.22-12,828,857.16

Finding the Fourth Proportional to 21,527,956.68, 29,715,779.22 and 12,828,857.16

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Solution

The fourth proportional to 21,527,956.68, 29,715,779.22 and 12,828,857.16 is: 17,708,112.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,527,956.68 : 29,715,779.22 = 12,828,857.16 : x
  2. Step 2: Convert to fraction form
    21,527,956.68/29,715,779.22 = 12,828,857.16/x
  3. Step 3: Cross multiply
    21,527,956.68x = 29,715,779.22 × 12,828,857.16
  4. Step 4: Simplify right side
    21,527,956.68x = 381,219,487,011,476.19
  5. Step 5: Solve for x
    x = 381,219,487,011,476.19/21,527,956.68
  6. Step 6: Final answer
    x = 17,708,112.88

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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.