Home / 31,036.06-42,823.27-20,296.68

Finding the Fourth Proportional to 31,036.06, 42,823.27 and 20,296.68

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Solution

The fourth proportional to 31,036.06, 42,823.27 and 20,296.68 is: 28,005.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,036.06 : 42,823.27 = 20,296.68 : x
  2. Step 2: Convert to fraction form
    31,036.06/42,823.27 = 20,296.68/x
  3. Step 3: Cross multiply
    31,036.06x = 42,823.27 × 20,296.68
  4. Step 4: Simplify right side
    31,036.06x = 869,170,072.53
  5. Step 5: Solve for x
    x = 869,170,072.53/31,036.06
  6. Step 6: Final answer
    x = 28,005.17

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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.