Home / 10,878.62-15,012.23-6,402.65

Finding the Fourth Proportional to 10,878.62, 15,012.23 and 6,402.65

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Solution

The fourth proportional to 10,878.62, 15,012.23 and 6,402.65 is: 8,835.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,878.62 : 15,012.23 = 6,402.65 : x
  2. Step 2: Convert to fraction form
    10,878.62/15,012.23 = 6,402.65/x
  3. Step 3: Cross multiply
    10,878.62x = 15,012.23 × 6,402.65
  4. Step 4: Simplify right side
    10,878.62x = 96,117,947.34
  5. Step 5: Solve for x
    x = 96,117,947.34/10,878.62
  6. Step 6: Final answer
    x = 8,835.49

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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.