Home / 20,904.04-31,356.78-10,510.12

Finding the Fourth Proportional to 20,904.04, 31,356.78 and 10,510.12

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Solution

The fourth proportional to 20,904.04, 31,356.78 and 10,510.12 is: 15,765.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.04 : 31,356.78 = 10,510.12 : x
  2. Step 2: Convert to fraction form
    20,904.04/31,356.78 = 10,510.12/x
  3. Step 3: Cross multiply
    20,904.04x = 31,356.78 × 10,510.12
  4. Step 4: Simplify right side
    20,904.04x = 329,563,520.61
  5. Step 5: Solve for x
    x = 329,563,520.61/20,904.04
  6. Step 6: Final answer
    x = 15,765.54

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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.