Home / 18,915.40-28,514.75-17,646.76

Finding the Fourth Proportional to 18,915.40, 28,514.75 and 17,646.76

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Solution

The fourth proportional to 18,915.40, 28,514.75 and 17,646.76 is: 26,602.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915.40 : 28,514.75 = 17,646.76 : x
  2. Step 2: Convert to fraction form
    18,915.40/28,514.75 = 17,646.76/x
  3. Step 3: Cross multiply
    18,915.40x = 28,514.75 × 17,646.76
  4. Step 4: Simplify right side
    18,915.40x = 503,192,949.71
  5. Step 5: Solve for x
    x = 503,192,949.71/18,915.40
  6. Step 6: Final answer
    x = 26,602.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.