Home / 15,527.66-21,428.61-8,454.20

Finding the Fourth Proportional to 15,527.66, 21,428.61 and 8,454.20

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Solution

The fourth proportional to 15,527.66, 21,428.61 and 8,454.20 is: 11,667.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,527.66 : 21,428.61 = 8,454.20 : x
  2. Step 2: Convert to fraction form
    15,527.66/21,428.61 = 8,454.20/x
  3. Step 3: Cross multiply
    15,527.66x = 21,428.61 × 8,454.20
  4. Step 4: Simplify right side
    15,527.66x = 181,161,754.66
  5. Step 5: Solve for x
    x = 181,161,754.66/15,527.66
  6. Step 6: Final answer
    x = 11,667.04

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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.