Home / 31,110.75-42,935.91-18,368.13

Finding the Fourth Proportional to 31,110.75, 42,935.91 and 18,368.13

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Solution

The fourth proportional to 31,110.75, 42,935.91 and 18,368.13 is: 25,349.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,110.75 : 42,935.91 = 18,368.13 : x
  2. Step 2: Convert to fraction form
    31,110.75/42,935.91 = 18,368.13/x
  3. Step 3: Cross multiply
    31,110.75x = 42,935.91 × 18,368.13
  4. Step 4: Simplify right side
    31,110.75x = 788,652,376.55
  5. Step 5: Solve for x
    x = 788,652,376.55/31,110.75
  6. Step 6: Final answer
    x = 25,349.83

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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.