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Finding the Fourth Proportional to 15,904.90, 23,820.90 and 15,540.40

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Solution

The fourth proportional to 15,904.90, 23,820.90 and 15,540.40 is: 23,274.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,904.90 : 23,820.90 = 15,540.40 : x
  2. Step 2: Convert to fraction form
    15,904.90/23,820.90 = 15,540.40/x
  3. Step 3: Cross multiply
    15,904.90x = 23,820.90 × 15,540.40
  4. Step 4: Simplify right side
    15,904.90x = 370,186,314.36
  5. Step 5: Solve for x
    x = 370,186,314.36/15,904.90
  6. Step 6: Final answer
    x = 23,274.99

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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.