Home / 19,915.80-29,877.30-10,030.20

Finding the Fourth Proportional to 19,915.80, 29,877.30 and 10,030.20

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Solution

The fourth proportional to 19,915.80, 29,877.30 and 10,030.20 is: 15,047.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,915.80 : 29,877.30 = 10,030.20 : x
  2. Step 2: Convert to fraction form
    19,915.80/29,877.30 = 10,030.20/x
  3. Step 3: Cross multiply
    19,915.80x = 29,877.30 × 10,030.20
  4. Step 4: Simplify right side
    19,915.80x = 299,675,294.46
  5. Step 5: Solve for x
    x = 299,675,294.46/19,915.80
  6. Step 6: Final answer
    x = 15,047.11

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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.