Home / 34,005.60-51,008.40-10,639.20

Finding the Fourth Proportional to 34,005.60, 51,008.40 and 10,639.20

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Solution

The fourth proportional to 34,005.60, 51,008.40 and 10,639.20 is: 15,958.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,005.60 : 51,008.40 = 10,639.20 : x
  2. Step 2: Convert to fraction form
    34,005.60/51,008.40 = 10,639.20/x
  3. Step 3: Cross multiply
    34,005.60x = 51,008.40 × 10,639.20
  4. Step 4: Simplify right side
    34,005.60x = 542,688,569.28
  5. Step 5: Solve for x
    x = 542,688,569.28/34,005.60
  6. Step 6: Final answer
    x = 15,958.80

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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.