Home / 20,281.79-28,008.05-19,177.36

Finding the Fourth Proportional to 20,281.79, 28,008.05 and 19,177.36

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Solution

The fourth proportional to 20,281.79, 28,008.05 and 19,177.36 is: 26,482.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.79 : 28,008.05 = 19,177.36 : x
  2. Step 2: Convert to fraction form
    20,281.79/28,008.05 = 19,177.36/x
  3. Step 3: Cross multiply
    20,281.79x = 28,008.05 × 19,177.36
  4. Step 4: Simplify right side
    20,281.79x = 537,120,291.84
  5. Step 5: Solve for x
    x = 537,120,291.84/20,281.79
  6. Step 6: Final answer
    x = 26,482.88

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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.