Home / 28,454.98-39,266.85-15,707.89

Finding the Fourth Proportional to 28,454.98, 39,266.85 and 15,707.89

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Solution

The fourth proportional to 28,454.98, 39,266.85 and 15,707.89 is: 21,676.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,454.98 : 39,266.85 = 15,707.89 : x
  2. Step 2: Convert to fraction form
    28,454.98/39,266.85 = 15,707.89/x
  3. Step 3: Cross multiply
    28,454.98x = 39,266.85 × 15,707.89
  4. Step 4: Simplify right side
    28,454.98x = 616,799,485.61
  5. Step 5: Solve for x
    x = 616,799,485.61/28,454.98
  6. Step 6: Final answer
    x = 21,676.32

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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.