Home / 31,918.16-43,951.95-31,210.08

Finding the Fourth Proportional to 31,918.16, 43,951.95 and 31,210.08

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Solution

The fourth proportional to 31,918.16, 43,951.95 and 31,210.08 is: 42,976.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,918.16 : 43,951.95 = 31,210.08 : x
  2. Step 2: Convert to fraction form
    31,918.16/43,951.95 = 31,210.08/x
  3. Step 3: Cross multiply
    31,918.16x = 43,951.95 × 31,210.08
  4. Step 4: Simplify right side
    31,918.16x = 1,371,743,875.66
  5. Step 5: Solve for x
    x = 1,371,743,875.66/31,918.16
  6. Step 6: Final answer
    x = 42,976.92

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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.