Home / 15,507.68-21,422.52-12,015.92

Finding the Fourth Proportional to 15,507.68, 21,422.52 and 12,015.92

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Solution

The fourth proportional to 15,507.68, 21,422.52 and 12,015.92 is: 16,598.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,507.68 : 21,422.52 = 12,015.92 : x
  2. Step 2: Convert to fraction form
    15,507.68/21,422.52 = 12,015.92/x
  3. Step 3: Cross multiply
    15,507.68x = 21,422.52 × 12,015.92
  4. Step 4: Simplify right side
    15,507.68x = 257,411,286.52
  5. Step 5: Solve for x
    x = 257,411,286.52/15,507.68
  6. Step 6: Final answer
    x = 16,598.96

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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.