Home / 31,048.40-42,823.68-19,708.04

Finding the Fourth Proportional to 31,048.40, 42,823.68 and 19,708.04

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Solution

The fourth proportional to 31,048.40, 42,823.68 and 19,708.04 is: 27,182.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,048.40 : 42,823.68 = 19,708.04 : x
  2. Step 2: Convert to fraction form
    31,048.40/42,823.68 = 19,708.04/x
  3. Step 3: Cross multiply
    31,048.40x = 42,823.68 × 19,708.04
  4. Step 4: Simplify right side
    31,048.40x = 843,970,798.39
  5. Step 5: Solve for x
    x = 843,970,798.39/31,048.40
  6. Step 6: Final answer
    x = 27,182.42

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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.