Home / 28,549.30-42,820.16-12,963.34

Finding the Fourth Proportional to 28,549.30, 42,820.16 and 12,963.34

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Solution

The fourth proportional to 28,549.30, 42,820.16 and 12,963.34 is: 19,443.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,549.30 : 42,820.16 = 12,963.34 : x
  2. Step 2: Convert to fraction form
    28,549.30/42,820.16 = 12,963.34/x
  3. Step 3: Cross multiply
    28,549.30x = 42,820.16 × 12,963.34
  4. Step 4: Simplify right side
    28,549.30x = 555,092,292.93
  5. Step 5: Solve for x
    x = 555,092,292.93/28,549.30
  6. Step 6: Final answer
    x = 19,443.29

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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.