Home / 15,487.04-21,371.64-9,199.28

Finding the Fourth Proportional to 15,487.04, 21,371.64 and 9,199.28

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Solution

The fourth proportional to 15,487.04, 21,371.64 and 9,199.28 is: 12,694.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,487.04 : 21,371.64 = 9,199.28 : x
  2. Step 2: Convert to fraction form
    15,487.04/21,371.64 = 9,199.28/x
  3. Step 3: Cross multiply
    15,487.04x = 21,371.64 × 9,199.28
  4. Step 4: Simplify right side
    15,487.04x = 196,603,700.42
  5. Step 5: Solve for x
    x = 196,603,700.42/15,487.04
  6. Step 6: Final answer
    x = 12,694.72

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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.