Home / 20,397.60-28,166.40-19,347.84

Finding the Fourth Proportional to 20,397.60, 28,166.40 and 19,347.84

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Solution

The fourth proportional to 20,397.60, 28,166.40 and 19,347.84 is: 26,716.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,397.60 : 28,166.40 = 19,347.84 : x
  2. Step 2: Convert to fraction form
    20,397.60/28,166.40 = 19,347.84/x
  3. Step 3: Cross multiply
    20,397.60x = 28,166.40 × 19,347.84
  4. Step 4: Simplify right side
    20,397.60x = 544,959,000.58
  5. Step 5: Solve for x
    x = 544,959,000.58/20,397.60
  6. Step 6: Final answer
    x = 26,716.82

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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.