Home / 15,304.32-21,122.96-8,931.68

Finding the Fourth Proportional to 15,304.32, 21,122.96 and 8,931.68

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Solution

The fourth proportional to 15,304.32, 21,122.96 and 8,931.68 is: 12,327.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,304.32 : 21,122.96 = 8,931.68 : x
  2. Step 2: Convert to fraction form
    15,304.32/21,122.96 = 8,931.68/x
  3. Step 3: Cross multiply
    15,304.32x = 21,122.96 × 8,931.68
  4. Step 4: Simplify right side
    15,304.32x = 188,663,519.37
  5. Step 5: Solve for x
    x = 188,663,519.37/15,304.32
  6. Step 6: Final answer
    x = 12,327.47

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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.