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Finding the Fourth Proportional to 15,581.16, 21,501.72 and 8,507.52

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Solution

The fourth proportional to 15,581.16, 21,501.72 and 8,507.52 is: 11,740.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,581.16 : 21,501.72 = 8,507.52 : x
  2. Step 2: Convert to fraction form
    15,581.16/21,501.72 = 8,507.52/x
  3. Step 3: Cross multiply
    15,581.16x = 21,501.72 × 8,507.52
  4. Step 4: Simplify right side
    15,581.16x = 182,926,312.93
  5. Step 5: Solve for x
    x = 182,926,312.93/15,581.16
  6. Step 6: Final answer
    x = 11,740.22

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