Home / 31,835.13-43,914.18-19,877.71

Finding the Fourth Proportional to 31,835.13, 43,914.18 and 19,877.71

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Solution

The fourth proportional to 31,835.13, 43,914.18 and 19,877.71 is: 27,419.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,835.13 : 43,914.18 = 19,877.71 : x
  2. Step 2: Convert to fraction form
    31,835.13/43,914.18 = 19,877.71/x
  3. Step 3: Cross multiply
    31,835.13x = 43,914.18 × 19,877.71
  4. Step 4: Simplify right side
    31,835.13x = 872,913,225.14
  5. Step 5: Solve for x
    x = 872,913,225.14/31,835.13
  6. Step 6: Final answer
    x = 27,419.81

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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.