Home / 28,253.22-38,990.85-15,506.29

Finding the Fourth Proportional to 28,253.22, 38,990.85 and 15,506.29

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Solution

The fourth proportional to 28,253.22, 38,990.85 and 15,506.29 is: 21,399.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,253.22 : 38,990.85 = 15,506.29 : x
  2. Step 2: Convert to fraction form
    28,253.22/38,990.85 = 15,506.29/x
  3. Step 3: Cross multiply
    28,253.22x = 38,990.85 × 15,506.29
  4. Step 4: Simplify right side
    28,253.22x = 604,603,154.96
  5. Step 5: Solve for x
    x = 604,603,154.96/28,253.22
  6. Step 6: Final answer
    x = 21,399.45

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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.