Home / 28,372.72-39,153.98-15,625.66

Finding the Fourth Proportional to 28,372.72, 39,153.98 and 15,625.66

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Solution

The fourth proportional to 28,372.72, 39,153.98 and 15,625.66 is: 21,563.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,372.72 : 39,153.98 = 15,625.66 : x
  2. Step 2: Convert to fraction form
    28,372.72/39,153.98 = 15,625.66/x
  3. Step 3: Cross multiply
    28,372.72x = 39,153.98 × 15,625.66
  4. Step 4: Simplify right side
    28,372.72x = 611,806,779.13
  5. Step 5: Solve for x
    x = 611,806,779.13/28,372.72
  6. Step 6: Final answer
    x = 21,563.21

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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.