Home / 19,915.80-29,873.72-5,124.75

Finding the Fourth Proportional to 19,915.80, 29,873.72 and 5,124.75

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Solution

The fourth proportional to 19,915.80, 29,873.72 and 5,124.75 is: 7,687.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,915.80 : 29,873.72 = 5,124.75 : x
  2. Step 2: Convert to fraction form
    19,915.80/29,873.72 = 5,124.75/x
  3. Step 3: Cross multiply
    19,915.80x = 29,873.72 × 5,124.75
  4. Step 4: Simplify right side
    19,915.80x = 153,095,346.57
  5. Step 5: Solve for x
    x = 153,095,346.57/19,915.80
  6. Step 6: Final answer
    x = 7,687.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.