Home / 20,487.07-28,269.07-11,534.05

Finding the Fourth Proportional to 20,487.07, 28,269.07 and 11,534.05

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Solution

The fourth proportional to 20,487.07, 28,269.07 and 11,534.05 is: 15,915.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,487.07 : 28,269.07 = 11,534.05 : x
  2. Step 2: Convert to fraction form
    20,487.07/28,269.07 = 11,534.05/x
  3. Step 3: Cross multiply
    20,487.07x = 28,269.07 × 11,534.05
  4. Step 4: Simplify right side
    20,487.07x = 326,056,866.83
  5. Step 5: Solve for x
    x = 326,056,866.83/20,487.07
  6. Step 6: Final answer
    x = 15,915.25

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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.