Home / 15,312.68-21,131.72-8,599.76

Finding the Fourth Proportional to 15,312.68, 21,131.72 and 8,599.76

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Solution

The fourth proportional to 15,312.68, 21,131.72 and 8,599.76 is: 11,867.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,312.68 : 21,131.72 = 8,599.76 : x
  2. Step 2: Convert to fraction form
    15,312.68/21,131.72 = 8,599.76/x
  3. Step 3: Cross multiply
    15,312.68x = 21,131.72 × 8,599.76
  4. Step 4: Simplify right side
    15,312.68x = 181,727,720.39
  5. Step 5: Solve for x
    x = 181,727,720.39/15,312.68
  6. Step 6: Final answer
    x = 11,867.79

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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.