Home / 20,667.13-28,470.02-14,985.18

Finding the Fourth Proportional to 20,667.13, 28,470.02 and 14,985.18

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Solution

The fourth proportional to 20,667.13, 28,470.02 and 14,985.18 is: 20,642.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,667.13 : 28,470.02 = 14,985.18 : x
  2. Step 2: Convert to fraction form
    20,667.13/28,470.02 = 14,985.18/x
  3. Step 3: Cross multiply
    20,667.13x = 28,470.02 × 14,985.18
  4. Step 4: Simplify right side
    20,667.13x = 426,628,374.30
  5. Step 5: Solve for x
    x = 426,628,374.30/20,667.13
  6. Step 6: Final answer
    x = 20,642.85

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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.