Home / 28,460.16-39,291.84-20,522.88

Finding the Fourth Proportional to 28,460.16, 39,291.84 and 20,522.88

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Solution

The fourth proportional to 28,460.16, 39,291.84 and 20,522.88 is: 28,333.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,460.16 : 39,291.84 = 20,522.88 : x
  2. Step 2: Convert to fraction form
    28,460.16/39,291.84 = 20,522.88/x
  3. Step 3: Cross multiply
    28,460.16x = 39,291.84 × 20,522.88
  4. Step 4: Simplify right side
    28,460.16x = 806,381,717.30
  5. Step 5: Solve for x
    x = 806,381,717.30/28,460.16
  6. Step 6: Final answer
    x = 28,333.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.