Home / 34,538.70-47,661.57-20,386.38

Finding the Fourth Proportional to 34,538.70, 47,661.57 and 20,386.38

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Solution

The fourth proportional to 34,538.70, 47,661.57 and 20,386.38 is: 28,132.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,538.70 : 47,661.57 = 20,386.38 : x
  2. Step 2: Convert to fraction form
    34,538.70/47,661.57 = 20,386.38/x
  3. Step 3: Cross multiply
    34,538.70x = 47,661.57 × 20,386.38
  4. Step 4: Simplify right side
    34,538.70x = 971,646,877.42
  5. Step 5: Solve for x
    x = 971,646,877.42/34,538.70
  6. Step 6: Final answer
    x = 28,132.12

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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.