Home / 15,938.40-23,875.20-8,151.60

Finding the Fourth Proportional to 15,938.40, 23,875.20 and 8,151.60

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Solution

The fourth proportional to 15,938.40, 23,875.20 and 8,151.60 is: 12,210.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,938.40 : 23,875.20 = 8,151.60 : x
  2. Step 2: Convert to fraction form
    15,938.40/23,875.20 = 8,151.60/x
  3. Step 3: Cross multiply
    15,938.40x = 23,875.20 × 8,151.60
  4. Step 4: Simplify right side
    15,938.40x = 194,621,080.32
  5. Step 5: Solve for x
    x = 194,621,080.32/15,938.40
  6. Step 6: Final answer
    x = 12,210.83

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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.