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Finding the Fourth Proportional to 15,877.40, 23,799.90 and 9,300.20

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Solution

The fourth proportional to 15,877.40, 23,799.90 and 9,300.20 is: 13,940.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,877.40 : 23,799.90 = 9,300.20 : x
  2. Step 2: Convert to fraction form
    15,877.40/23,799.90 = 9,300.20/x
  3. Step 3: Cross multiply
    15,877.40x = 23,799.90 × 9,300.20
  4. Step 4: Simplify right side
    15,877.40x = 221,343,829.98
  5. Step 5: Solve for x
    x = 221,343,829.98/15,877.40
  6. Step 6: Final answer
    x = 13,940.81

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1.5x scale

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.