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Finding the Fourth Proportional to 18,040.40, 26,987.70 and 15,602.30

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Solution

The fourth proportional to 18,040.40, 26,987.70 and 15,602.30 is: 23,340.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,040.40 : 26,987.70 = 15,602.30 : x
  2. Step 2: Convert to fraction form
    18,040.40/26,987.70 = 15,602.30/x
  3. Step 3: Cross multiply
    18,040.40x = 26,987.70 × 15,602.30
  4. Step 4: Simplify right side
    18,040.40x = 421,070,191.71
  5. Step 5: Solve for x
    x = 421,070,191.71/18,040.40
  6. Step 6: Final answer
    x = 23,340.40

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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.