Home / 27,689.23-38,210.64-15,589.72

Finding the Fourth Proportional to 27,689.23, 38,210.64 and 15,589.72

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Solution

The fourth proportional to 27,689.23, 38,210.64 and 15,589.72 is: 21,513.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,689.23 : 38,210.64 = 15,589.72 : x
  2. Step 2: Convert to fraction form
    27,689.23/38,210.64 = 15,589.72/x
  3. Step 3: Cross multiply
    27,689.23x = 38,210.64 × 15,589.72
  4. Step 4: Simplify right side
    27,689.23x = 595,693,178.62
  5. Step 5: Solve for x
    x = 595,693,178.62/27,689.23
  6. Step 6: Final answer
    x = 21,513.53

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Half scale
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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.