Home / 13,570.02-20,338.02-7,729.92

Finding the Fourth Proportional to 13,570.02, 20,338.02 and 7,729.92

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Solution

The fourth proportional to 13,570.02, 20,338.02 and 7,729.92 is: 11,585.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,570.02 : 20,338.02 = 7,729.92 : x
  2. Step 2: Convert to fraction form
    13,570.02/20,338.02 = 7,729.92/x
  3. Step 3: Cross multiply
    13,570.02x = 20,338.02 × 7,729.92
  4. Step 4: Simplify right side
    13,570.02x = 157,211,267.56
  5. Step 5: Solve for x
    x = 157,211,267.56/13,570.02
  6. Step 6: Final answer
    x = 11,585.19

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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.