Home / 20,934.13-28,877.57-13,263.37

Finding the Fourth Proportional to 20,934.13, 28,877.57 and 13,263.37

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Solution

The fourth proportional to 20,934.13, 28,877.57 and 13,263.37 is: 18,296.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.13 : 28,877.57 = 13,263.37 : x
  2. Step 2: Convert to fraction form
    20,934.13/28,877.57 = 13,263.37/x
  3. Step 3: Cross multiply
    20,934.13x = 28,877.57 × 13,263.37
  4. Step 4: Simplify right side
    20,934.13x = 383,013,829.29
  5. Step 5: Solve for x
    x = 383,013,829.29/20,934.13
  6. Step 6: Final answer
    x = 18,296.14

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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.