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Finding the Fourth Proportional to 15,873.60, 23,818.50 and 6,520.80

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Solution

The fourth proportional to 15,873.60, 23,818.50 and 6,520.80 is: 9,784.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,873.60 : 23,818.50 = 6,520.80 : x
  2. Step 2: Convert to fraction form
    15,873.60/23,818.50 = 6,520.80/x
  3. Step 3: Cross multiply
    15,873.60x = 23,818.50 × 6,520.80
  4. Step 4: Simplify right side
    15,873.60x = 155,315,674.80
  5. Step 5: Solve for x
    x = 155,315,674.80/15,873.60
  6. Step 6: Final answer
    x = 9,784.53

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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.