Home / 11,370.45-15,696.89-8,812.47

Finding the Fourth Proportional to 11,370.45, 15,696.89 and 8,812.47

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Solution

The fourth proportional to 11,370.45, 15,696.89 and 8,812.47 is: 12,165.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,370.45 : 15,696.89 = 8,812.47 : x
  2. Step 2: Convert to fraction form
    11,370.45/15,696.89 = 8,812.47/x
  3. Step 3: Cross multiply
    11,370.45x = 15,696.89 × 8,812.47
  4. Step 4: Simplify right side
    11,370.45x = 138,328,328.16
  5. Step 5: Solve for x
    x = 138,328,328.16/11,370.45
  6. Step 6: Final answer
    x = 12,165.60

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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.