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Finding the Fourth Proportional to 15,458.58, 21,332.84 and 8,744.06

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Solution

The fourth proportional to 15,458.58, 21,332.84 and 8,744.06 is: 12,066.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,458.58 : 21,332.84 = 8,744.06 : x
  2. Step 2: Convert to fraction form
    15,458.58/21,332.84 = 8,744.06/x
  3. Step 3: Cross multiply
    15,458.58x = 21,332.84 × 8,744.06
  4. Step 4: Simplify right side
    15,458.58x = 186,535,708.12
  5. Step 5: Solve for x
    x = 186,535,708.12/15,458.58
  6. Step 6: Final answer
    x = 12,066.81

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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.