Home / 15,458.31-21,332.16-8,743.68

Finding the Fourth Proportional to 15,458.31, 21,332.16 and 8,743.68

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Solution

The fourth proportional to 15,458.31, 21,332.16 and 8,743.68 is: 12,066.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,458.31 : 21,332.16 = 8,743.68 : x
  2. Step 2: Convert to fraction form
    15,458.31/21,332.16 = 8,743.68/x
  3. Step 3: Cross multiply
    15,458.31x = 21,332.16 × 8,743.68
  4. Step 4: Simplify right side
    15,458.31x = 186,521,580.75
  5. Step 5: Solve for x
    x = 186,521,580.75/15,458.31
  6. Step 6: Final answer
    x = 12,066.10

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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.