Home / 10,864.98-14,988.60-6,388.65

Finding the Fourth Proportional to 10,864.98, 14,988.60 and 6,388.65

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Solution

The fourth proportional to 10,864.98, 14,988.60 and 6,388.65 is: 8,813.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,864.98 : 14,988.60 = 6,388.65 : x
  2. Step 2: Convert to fraction form
    10,864.98/14,988.60 = 6,388.65/x
  3. Step 3: Cross multiply
    10,864.98x = 14,988.60 × 6,388.65
  4. Step 4: Simplify right side
    10,864.98x = 95,756,919.39
  5. Step 5: Solve for x
    x = 95,756,919.39/10,864.98
  6. Step 6: Final answer
    x = 8,813.35

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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.