Home / 20,498.40-28,290.47-11,547.63

Finding the Fourth Proportional to 20,498.40, 28,290.47 and 11,547.63

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Solution

The fourth proportional to 20,498.40, 28,290.47 and 11,547.63 is: 15,937.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,498.40 : 28,290.47 = 11,547.63 : x
  2. Step 2: Convert to fraction form
    20,498.40/28,290.47 = 11,547.63/x
  3. Step 3: Cross multiply
    20,498.40x = 28,290.47 × 11,547.63
  4. Step 4: Simplify right side
    20,498.40x = 326,687,822.35
  5. Step 5: Solve for x
    x = 326,687,822.35/20,498.40
  6. Step 6: Final answer
    x = 15,937.24

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Double 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.