Home / 15,412.66-21,269.10-8,698.11

Finding the Fourth Proportional to 15,412.66, 21,269.10 and 8,698.11

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Solution

The fourth proportional to 15,412.66, 21,269.10 and 8,698.11 is: 12,003.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,412.66 : 21,269.10 = 8,698.11 : x
  2. Step 2: Convert to fraction form
    15,412.66/21,269.10 = 8,698.11/x
  3. Step 3: Cross multiply
    15,412.66x = 21,269.10 × 8,698.11
  4. Step 4: Simplify right side
    15,412.66x = 185,000,971.40
  5. Step 5: Solve for x
    x = 185,000,971.40/15,412.66
  6. Step 6: Final answer
    x = 12,003.18

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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.