Home / 34,158.18-47,130.26-20,729.13

Finding the Fourth Proportional to 34,158.18, 47,130.26 and 20,729.13

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Solution

The fourth proportional to 34,158.18, 47,130.26 and 20,729.13 is: 28,601.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,158.18 : 47,130.26 = 20,729.13 : x
  2. Step 2: Convert to fraction form
    34,158.18/47,130.26 = 20,729.13/x
  3. Step 3: Cross multiply
    34,158.18x = 47,130.26 × 20,729.13
  4. Step 4: Simplify right side
    34,158.18x = 976,968,947.18
  5. Step 5: Solve for x
    x = 976,968,947.18/34,158.18
  6. Step 6: Final answer
    x = 28,601.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.