Home / 20,284.08-27,966.54-15,509.88

Finding the Fourth Proportional to 20,284.08, 27,966.54 and 15,509.88

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Solution

The fourth proportional to 20,284.08, 27,966.54 and 15,509.88 is: 21,384.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,284.08 : 27,966.54 = 15,509.88 : x
  2. Step 2: Convert to fraction form
    20,284.08/27,966.54 = 15,509.88/x
  3. Step 3: Cross multiply
    20,284.08x = 27,966.54 × 15,509.88
  4. Step 4: Simplify right side
    20,284.08x = 433,757,679.42
  5. Step 5: Solve for x
    x = 433,757,679.42/20,284.08
  6. Step 6: Final answer
    x = 21,384.14

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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.