Home / 18,253.08-27,378.86-9,985.47

Finding the Fourth Proportional to 18,253.08, 27,378.86 and 9,985.47

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Solution

The fourth proportional to 18,253.08, 27,378.86 and 9,985.47 is: 14,977.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,253.08 : 27,378.86 = 9,985.47 : x
  2. Step 2: Convert to fraction form
    18,253.08/27,378.86 = 9,985.47/x
  3. Step 3: Cross multiply
    18,253.08x = 27,378.86 × 9,985.47
  4. Step 4: Simplify right side
    18,253.08x = 273,390,837.91
  5. Step 5: Solve for x
    x = 273,390,837.91/18,253.08
  6. Step 6: Final answer
    x = 14,977.80

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1.5x scale

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.