Home / 31,666.68-43,720.56-20,341.26

Finding the Fourth Proportional to 31,666.68, 43,720.56 and 20,341.26

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Solution

The fourth proportional to 31,666.68, 43,720.56 and 20,341.26 is: 28,084.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,666.68 : 43,720.56 = 20,341.26 : x
  2. Step 2: Convert to fraction form
    31,666.68/43,720.56 = 20,341.26/x
  3. Step 3: Cross multiply
    31,666.68x = 43,720.56 × 20,341.26
  4. Step 4: Simplify right side
    31,666.68x = 889,331,278.31
  5. Step 5: Solve for x
    x = 889,331,278.31/31,666.68
  6. Step 6: Final answer
    x = 28,084.13

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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.