Home / 15,527.58-21,428.15-8,454.03

Finding the Fourth Proportional to 15,527.58, 21,428.15 and 8,454.03

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Solution

The fourth proportional to 15,527.58, 21,428.15 and 8,454.03 is: 11,666.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,527.58 : 21,428.15 = 8,454.03 : x
  2. Step 2: Convert to fraction form
    15,527.58/21,428.15 = 8,454.03/x
  3. Step 3: Cross multiply
    15,527.58x = 21,428.15 × 8,454.03
  4. Step 4: Simplify right side
    15,527.58x = 181,154,180.67
  5. Step 5: Solve for x
    x = 181,154,180.67/15,527.58
  6. Step 6: Final answer
    x = 11,666.61

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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.