Home / 28,472.24-42,707.80-12,878.96

Finding the Fourth Proportional to 28,472.24, 42,707.80 and 12,878.96

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Solution

The fourth proportional to 28,472.24, 42,707.80 and 12,878.96 is: 19,318.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,472.24 : 42,707.80 = 12,878.96 : x
  2. Step 2: Convert to fraction form
    28,472.24/42,707.80 = 12,878.96/x
  3. Step 3: Cross multiply
    28,472.24x = 42,707.80 × 12,878.96
  4. Step 4: Simplify right side
    28,472.24x = 550,032,047.89
  5. Step 5: Solve for x
    x = 550,032,047.89/28,472.24
  6. Step 6: Final answer
    x = 19,318.19

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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.