Home / 15,915.93-21,948.08-13,523.28

Finding the Fourth Proportional to 15,915.93, 21,948.08 and 13,523.28

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Solution

The fourth proportional to 15,915.93, 21,948.08 and 13,523.28 is: 18,648.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,915.93 : 21,948.08 = 13,523.28 : x
  2. Step 2: Convert to fraction form
    15,915.93/21,948.08 = 13,523.28/x
  3. Step 3: Cross multiply
    15,915.93x = 21,948.08 × 13,523.28
  4. Step 4: Simplify right side
    15,915.93x = 296,809,963.69
  5. Step 5: Solve for x
    x = 296,809,963.69/15,915.93
  6. Step 6: Final answer
    x = 18,648.61

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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.