Home / 20,877.20-31,280.58-10,333.16

Finding the Fourth Proportional to 20,877.20, 31,280.58 and 10,333.16

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Solution

The fourth proportional to 20,877.20, 31,280.58 and 10,333.16 is: 15,482.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,877.20 : 31,280.58 = 10,333.16 : x
  2. Step 2: Convert to fraction form
    20,877.20/31,280.58 = 10,333.16/x
  3. Step 3: Cross multiply
    20,877.20x = 31,280.58 × 10,333.16
  4. Step 4: Simplify right side
    20,877.20x = 323,227,238.03
  5. Step 5: Solve for x
    x = 323,227,238.03/20,877.20
  6. Step 6: Final answer
    x = 15,482.31

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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.