Home / 18,139.80-27,210.60-6,453.93

Finding the Fourth Proportional to 18,139.80, 27,210.60 and 6,453.93

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Solution

The fourth proportional to 18,139.80, 27,210.60 and 6,453.93 is: 9,681.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.80 : 27,210.60 = 6,453.93 : x
  2. Step 2: Convert to fraction form
    18,139.80/27,210.60 = 6,453.93/x
  3. Step 3: Cross multiply
    18,139.80x = 27,210.60 × 6,453.93
  4. Step 4: Simplify right side
    18,139.80x = 175,615,307.66
  5. Step 5: Solve for x
    x = 175,615,307.66/18,139.80
  6. Step 6: Final answer
    x = 9,681.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.