Home / 20,291.19-28,019.66-12,750.59

Finding the Fourth Proportional to 20,291.19, 28,019.66 and 12,750.59

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Solution

The fourth proportional to 20,291.19, 28,019.66 and 12,750.59 is: 17,607.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,291.19 : 28,019.66 = 12,750.59 : x
  2. Step 2: Convert to fraction form
    20,291.19/28,019.66 = 12,750.59/x
  3. Step 3: Cross multiply
    20,291.19x = 28,019.66 × 12,750.59
  4. Step 4: Simplify right side
    20,291.19x = 357,266,992.75
  5. Step 5: Solve for x
    x = 357,266,992.75/20,291.19
  6. Step 6: Final answer
    x = 17,607.00

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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.