Home / 21,285.20-31,947.48-10,762.62

Finding the Fourth Proportional to 21,285.20, 31,947.48 and 10,762.62

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Solution

The fourth proportional to 21,285.20, 31,947.48 and 10,762.62 is: 16,153.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,285.20 : 31,947.48 = 10,762.62 : x
  2. Step 2: Convert to fraction form
    21,285.20/31,947.48 = 10,762.62/x
  3. Step 3: Cross multiply
    21,285.20x = 31,947.48 × 10,762.62
  4. Step 4: Simplify right side
    21,285.20x = 343,838,587.20
  5. Step 5: Solve for x
    x = 343,838,587.20/21,285.20
  6. Step 6: Final answer
    x = 16,153.88

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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.