Home / 28,020.72-42,005.16-10,502.04

Finding the Fourth Proportional to 28,020.72, 42,005.16 and 10,502.04

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Solution

The fourth proportional to 28,020.72, 42,005.16 and 10,502.04 is: 15,743.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,020.72 : 42,005.16 = 10,502.04 : x
  2. Step 2: Convert to fraction form
    28,020.72/42,005.16 = 10,502.04/x
  3. Step 3: Cross multiply
    28,020.72x = 42,005.16 × 10,502.04
  4. Step 4: Simplify right side
    28,020.72x = 441,139,870.53
  5. Step 5: Solve for x
    x = 441,139,870.53/28,020.72
  6. Step 6: Final answer
    x = 15,743.35

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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.