Home / 34,726.10-47,921.03-20,385.70

Finding the Fourth Proportional to 34,726.10, 47,921.03 and 20,385.70

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Solution

The fourth proportional to 34,726.10, 47,921.03 and 20,385.70 is: 28,131.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,726.10 : 47,921.03 = 20,385.70 : x
  2. Step 2: Convert to fraction form
    34,726.10/47,921.03 = 20,385.70/x
  3. Step 3: Cross multiply
    34,726.10x = 47,921.03 × 20,385.70
  4. Step 4: Simplify right side
    34,726.10x = 976,903,740.07
  5. Step 5: Solve for x
    x = 976,903,740.07/34,726.10
  6. Step 6: Final answer
    x = 28,131.69

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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.