Home / 28,374.12-39,156.36-15,627

Finding the Fourth Proportional to 28,374.12, 39,156.36 and 15,627

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Solution

The fourth proportional to 28,374.12, 39,156.36 and 15,627 is: 21,565.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,374.12 : 39,156.36 = 15,627 : x
  2. Step 2: Convert to fraction form
    28,374.12/39,156.36 = 15,627/x
  3. Step 3: Cross multiply
    28,374.12x = 39,156.36 × 15,627
  4. Step 4: Simplify right side
    28,374.12x = 611,896,437.72
  5. Step 5: Solve for x
    x = 611,896,437.72/28,374.12
  6. Step 6: Final answer
    x = 21,565.30

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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.