Home / 13,495.61-18,618.20-8,456.40

Finding the Fourth Proportional to 13,495.61, 18,618.20 and 8,456.40

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Solution

The fourth proportional to 13,495.61, 18,618.20 and 8,456.40 is: 11,666.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,495.61 : 18,618.20 = 8,456.40 : x
  2. Step 2: Convert to fraction form
    13,495.61/18,618.20 = 8,456.40/x
  3. Step 3: Cross multiply
    13,495.61x = 18,618.20 × 8,456.40
  4. Step 4: Simplify right side
    13,495.61x = 157,442,983.48
  5. Step 5: Solve for x
    x = 157,442,983.48/13,495.61
  6. Step 6: Final answer
    x = 11,666.23

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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.