Home / 15,425.90-21,287.71-8,352.34

Finding the Fourth Proportional to 15,425.90, 21,287.71 and 8,352.34

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Solution

The fourth proportional to 15,425.90, 21,287.71 and 8,352.34 is: 11,526.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,425.90 : 21,287.71 = 8,352.34 : x
  2. Step 2: Convert to fraction form
    15,425.90/21,287.71 = 8,352.34/x
  3. Step 3: Cross multiply
    15,425.90x = 21,287.71 × 8,352.34
  4. Step 4: Simplify right side
    15,425.90x = 177,802,191.74
  5. Step 5: Solve for x
    x = 177,802,191.74/15,425.90
  6. Step 6: Final answer
    x = 11,526.21

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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.