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Finding the Fourth Proportional to 15,840.60, 23,760.90 and 5,980.20

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Solution

The fourth proportional to 15,840.60, 23,760.90 and 5,980.20 is: 8,970.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,840.60 : 23,760.90 = 5,980.20 : x
  2. Step 2: Convert to fraction form
    15,840.60/23,760.90 = 5,980.20/x
  3. Step 3: Cross multiply
    15,840.60x = 23,760.90 × 5,980.20
  4. Step 4: Simplify right side
    15,840.60x = 142,094,934.18
  5. Step 5: Solve for x
    x = 142,094,934.18/15,840.60
  6. Step 6: Final answer
    x = 8,970.30

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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.