Home / 20,707.02-28,575.72-11,275.62

Finding the Fourth Proportional to 20,707.02, 28,575.72 and 11,275.62

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Solution

The fourth proportional to 20,707.02, 28,575.72 and 11,275.62 is: 15,560.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,707.02 : 28,575.72 = 11,275.62 : x
  2. Step 2: Convert to fraction form
    20,707.02/28,575.72 = 11,275.62/x
  3. Step 3: Cross multiply
    20,707.02x = 28,575.72 × 11,275.62
  4. Step 4: Simplify right side
    20,707.02x = 322,208,959.95
  5. Step 5: Solve for x
    x = 322,208,959.95/20,707.02
  6. Step 6: Final answer
    x = 15,560.37

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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.