Home / 15,516.04-21,412.59-8,442.92

Finding the Fourth Proportional to 15,516.04, 21,412.59 and 8,442.92

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Solution

The fourth proportional to 15,516.04, 21,412.59 and 8,442.92 is: 11,651.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,516.04 : 21,412.59 = 8,442.92 : x
  2. Step 2: Convert to fraction form
    15,516.04/21,412.59 = 8,442.92/x
  3. Step 3: Cross multiply
    15,516.04x = 21,412.59 × 8,442.92
  4. Step 4: Simplify right side
    15,516.04x = 180,784,635.09
  5. Step 5: Solve for x
    x = 180,784,635.09/15,516.04
  6. Step 6: Final answer
    x = 11,651.47

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1.5x scale

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.