Home / 20,280.67-27,985.50-11,326.93

Finding the Fourth Proportional to 20,280.67, 27,985.50 and 11,326.93

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Solution

The fourth proportional to 20,280.67, 27,985.50 and 11,326.93 is: 15,630.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,280.67 : 27,985.50 = 11,326.93 : x
  2. Step 2: Convert to fraction form
    20,280.67/27,985.50 = 11,326.93/x
  3. Step 3: Cross multiply
    20,280.67x = 27,985.50 × 11,326.93
  4. Step 4: Simplify right side
    20,280.67x = 316,989,799.52
  5. Step 5: Solve for x
    x = 316,989,799.52/20,280.67
  6. Step 6: Final answer
    x = 15,630.14

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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.