Home / 18,275.80-27,411.58-5,129.30

Finding the Fourth Proportional to 18,275.80, 27,411.58 and 5,129.30

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Solution

The fourth proportional to 18,275.80, 27,411.58 and 5,129.30 is: 7,693.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,275.80 : 27,411.58 = 5,129.30 : x
  2. Step 2: Convert to fraction form
    18,275.80/27,411.58 = 5,129.30/x
  3. Step 3: Cross multiply
    18,275.80x = 27,411.58 × 5,129.30
  4. Step 4: Simplify right side
    18,275.80x = 140,602,217.29
  5. Step 5: Solve for x
    x = 140,602,217.29/18,275.80
  6. Step 6: Final answer
    x = 7,693.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.