Home / 15,708.62-21,668.28-9,330.88

Finding the Fourth Proportional to 15,708.62, 21,668.28 and 9,330.88

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Solution

The fourth proportional to 15,708.62, 21,668.28 and 9,330.88 is: 12,870.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,708.62 : 21,668.28 = 9,330.88 : x
  2. Step 2: Convert to fraction form
    15,708.62/21,668.28 = 9,330.88/x
  3. Step 3: Cross multiply
    15,708.62x = 21,668.28 × 9,330.88
  4. Step 4: Simplify right side
    15,708.62x = 202,184,120.49
  5. Step 5: Solve for x
    x = 202,184,120.49/15,708.62
  6. Step 6: Final answer
    x = 12,870.90

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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.