Home / 18,339.12-27,482.76-9,111.60

Finding the Fourth Proportional to 18,339.12, 27,482.76 and 9,111.60

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Solution

The fourth proportional to 18,339.12, 27,482.76 and 9,111.60 is: 13,654.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,339.12 : 27,482.76 = 9,111.60 : x
  2. Step 2: Convert to fraction form
    18,339.12/27,482.76 = 9,111.60/x
  3. Step 3: Cross multiply
    18,339.12x = 27,482.76 × 9,111.60
  4. Step 4: Simplify right side
    18,339.12x = 250,411,916.02
  5. Step 5: Solve for x
    x = 250,411,916.02/18,339.12
  6. Step 6: Final answer
    x = 13,654.52

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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.