Home / 15,877.76-21,915.84-9,590.56

Finding the Fourth Proportional to 15,877.76, 21,915.84 and 9,590.56

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Solution

The fourth proportional to 15,877.76, 21,915.84 and 9,590.56 is: 13,237.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,877.76 : 21,915.84 = 9,590.56 : x
  2. Step 2: Convert to fraction form
    15,877.76/21,915.84 = 9,590.56/x
  3. Step 3: Cross multiply
    15,877.76x = 21,915.84 × 9,590.56
  4. Step 4: Simplify right side
    15,877.76x = 210,185,178.47
  5. Step 5: Solve for x
    x = 210,185,178.47/15,877.76
  6. Step 6: Final answer
    x = 13,237.71

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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.