Home / 20,718.42-31,082.26-7,570.45

Finding the Fourth Proportional to 20,718.42, 31,082.26 and 7,570.45

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Solution

The fourth proportional to 20,718.42, 31,082.26 and 7,570.45 is: 11,357.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718.42 : 31,082.26 = 7,570.45 : x
  2. Step 2: Convert to fraction form
    20,718.42/31,082.26 = 7,570.45/x
  3. Step 3: Cross multiply
    20,718.42x = 31,082.26 × 7,570.45
  4. Step 4: Simplify right side
    20,718.42x = 235,306,695.22
  5. Step 5: Solve for x
    x = 235,306,695.22/20,718.42
  6. Step 6: Final answer
    x = 11,357.37

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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.