Home / 31,869.61-43,953.88-28,287.18

Finding the Fourth Proportional to 31,869.61, 43,953.88 and 28,287.18

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Solution

The fourth proportional to 31,869.61, 43,953.88 and 28,287.18 is: 39,013.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,869.61 : 43,953.88 = 28,287.18 : x
  2. Step 2: Convert to fraction form
    31,869.61/43,953.88 = 28,287.18/x
  3. Step 3: Cross multiply
    31,869.61x = 43,953.88 × 28,287.18
  4. Step 4: Simplify right side
    31,869.61x = 1,243,331,315.26
  5. Step 5: Solve for x
    x = 1,243,331,315.26/31,869.61
  6. Step 6: Final answer
    x = 39,013.07

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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.