Home / 20,708.02-28,577.40-11,276.58

Finding the Fourth Proportional to 20,708.02, 28,577.40 and 11,276.58

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Solution

The fourth proportional to 20,708.02, 28,577.40 and 11,276.58 is: 15,561.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708.02 : 28,577.40 = 11,276.58 : x
  2. Step 2: Convert to fraction form
    20,708.02/28,577.40 = 11,276.58/x
  3. Step 3: Cross multiply
    20,708.02x = 28,577.40 × 11,276.58
  4. Step 4: Simplify right side
    20,708.02x = 322,255,337.29
  5. Step 5: Solve for x
    x = 322,255,337.29/20,708.02
  6. Step 6: Final answer
    x = 15,561.86

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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.