Home / 20,751.98-31,133.75-10,225.07

Finding the Fourth Proportional to 20,751.98, 31,133.75 and 10,225.07

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Solution

The fourth proportional to 20,751.98, 31,133.75 and 10,225.07 is: 15,340.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751.98 : 31,133.75 = 10,225.07 : x
  2. Step 2: Convert to fraction form
    20,751.98/31,133.75 = 10,225.07/x
  3. Step 3: Cross multiply
    20,751.98x = 31,133.75 × 10,225.07
  4. Step 4: Simplify right side
    20,751.98x = 318,344,773.11
  5. Step 5: Solve for x
    x = 318,344,773.11/20,751.98
  6. Step 6: Final answer
    x = 15,340.45

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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.