Home / 28,009.60-42,006.30-10,238.20

Finding the Fourth Proportional to 28,009.60, 42,006.30 and 10,238.20

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Solution

The fourth proportional to 28,009.60, 42,006.30 and 10,238.20 is: 15,354.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,009.60 : 42,006.30 = 10,238.20 : x
  2. Step 2: Convert to fraction form
    28,009.60/42,006.30 = 10,238.20/x
  3. Step 3: Cross multiply
    28,009.60x = 42,006.30 × 10,238.20
  4. Step 4: Simplify right side
    28,009.60x = 430,068,900.66
  5. Step 5: Solve for x
    x = 430,068,900.66/28,009.60
  6. Step 6: Final answer
    x = 15,354.34

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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.