Home / 31,040.84-42,837.76-18,294.56

Finding the Fourth Proportional to 31,040.84, 42,837.76 and 18,294.56

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Solution

The fourth proportional to 31,040.84, 42,837.76 and 18,294.56 is: 25,247.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,040.84 : 42,837.76 = 18,294.56 : x
  2. Step 2: Convert to fraction form
    31,040.84/42,837.76 = 18,294.56/x
  3. Step 3: Cross multiply
    31,040.84x = 42,837.76 × 18,294.56
  4. Step 4: Simplify right side
    31,040.84x = 783,697,876.74
  5. Step 5: Solve for x
    x = 783,697,876.74/31,040.84
  6. Step 6: Final answer
    x = 25,247.32

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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.