Home / 15,527.69-21,428.31-8,454.16

Finding the Fourth Proportional to 15,527.69, 21,428.31 and 8,454.16

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Solution

The fourth proportional to 15,527.69, 21,428.31 and 8,454.16 is: 11,666.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,527.69 : 21,428.31 = 8,454.16 : x
  2. Step 2: Convert to fraction form
    15,527.69/21,428.31 = 8,454.16/x
  3. Step 3: Cross multiply
    15,527.69x = 21,428.31 × 8,454.16
  4. Step 4: Simplify right side
    15,527.69x = 181,158,361.27
  5. Step 5: Solve for x
    x = 181,158,361.27/15,527.69
  6. Step 6: Final answer
    x = 11,666.79

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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.