Home / 20,495.16-28,223.76-17,805.15

Finding the Fourth Proportional to 20,495.16, 28,223.76 and 17,805.15

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Solution

The fourth proportional to 20,495.16, 28,223.76 and 17,805.15 is: 24,519.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,495.16 : 28,223.76 = 17,805.15 : x
  2. Step 2: Convert to fraction form
    20,495.16/28,223.76 = 17,805.15/x
  3. Step 3: Cross multiply
    20,495.16x = 28,223.76 × 17,805.15
  4. Step 4: Simplify right side
    20,495.16x = 502,528,139.25
  5. Step 5: Solve for x
    x = 502,528,139.25/20,495.16
  6. Step 6: Final answer
    x = 24,519.36

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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.