Home / 31,505.28-43,478.06-19,401.18

Finding the Fourth Proportional to 31,505.28, 43,478.06 and 19,401.18

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Solution

The fourth proportional to 31,505.28, 43,478.06 and 19,401.18 is: 26,774.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,505.28 : 43,478.06 = 19,401.18 : x
  2. Step 2: Convert to fraction form
    31,505.28/43,478.06 = 19,401.18/x
  3. Step 3: Cross multiply
    31,505.28x = 43,478.06 × 19,401.18
  4. Step 4: Simplify right side
    31,505.28x = 843,525,668.11
  5. Step 5: Solve for x
    x = 843,525,668.11/31,505.28
  6. Step 6: Final answer
    x = 26,774.10

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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.