Home / 15,528.40-21,427.56-9,239.92

Finding the Fourth Proportional to 15,528.40, 21,427.56 and 9,239.92

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Solution

The fourth proportional to 15,528.40, 21,427.56 and 9,239.92 is: 12,750.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,528.40 : 21,427.56 = 9,239.92 : x
  2. Step 2: Convert to fraction form
    15,528.40/21,427.56 = 9,239.92/x
  3. Step 3: Cross multiply
    15,528.40x = 21,427.56 × 9,239.92
  4. Step 4: Simplify right side
    15,528.40x = 197,988,940.20
  5. Step 5: Solve for x
    x = 197,988,940.20/15,528.40
  6. Step 6: Final answer
    x = 12,750.12

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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.