Home / 28,006.24-42,015.12-19,245.28

Finding the Fourth Proportional to 28,006.24, 42,015.12 and 19,245.28

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Solution

The fourth proportional to 28,006.24, 42,015.12 and 19,245.28 is: 28,871.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,006.24 : 42,015.12 = 19,245.28 : x
  2. Step 2: Convert to fraction form
    28,006.24/42,015.12 = 19,245.28/x
  3. Step 3: Cross multiply
    28,006.24x = 42,015.12 × 19,245.28
  4. Step 4: Simplify right side
    28,006.24x = 808,592,748.63
  5. Step 5: Solve for x
    x = 808,592,748.63/28,006.24
  6. Step 6: Final answer
    x = 28,871.88

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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.