Home / 18,866.32-28,302.54-6,387.10

Finding the Fourth Proportional to 18,866.32, 28,302.54 and 6,387.10

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Solution

The fourth proportional to 18,866.32, 28,302.54 and 6,387.10 is: 9,581.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,866.32 : 28,302.54 = 6,387.10 : x
  2. Step 2: Convert to fraction form
    18,866.32/28,302.54 = 6,387.10/x
  3. Step 3: Cross multiply
    18,866.32x = 28,302.54 × 6,387.10
  4. Step 4: Simplify right side
    18,866.32x = 180,771,153.23
  5. Step 5: Solve for x
    x = 180,771,153.23/18,866.32
  6. Step 6: Final answer
    x = 9,581.69

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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.