Home / 15,017.08-20,721.52-9,427

Finding the Fourth Proportional to 15,017.08, 20,721.52 and 9,427

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Solution

The fourth proportional to 15,017.08, 20,721.52 and 9,427 is: 13,007.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,017.08 : 20,721.52 = 9,427 : x
  2. Step 2: Convert to fraction form
    15,017.08/20,721.52 = 9,427/x
  3. Step 3: Cross multiply
    15,017.08x = 20,721.52 × 9,427
  4. Step 4: Simplify right side
    15,017.08x = 195,341,769.04
  5. Step 5: Solve for x
    x = 195,341,769.04/15,017.08
  6. Step 6: Final answer
    x = 13,007.97

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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.