Home / 13,316.59-18,363.78-10,331.35

Finding the Fourth Proportional to 13,316.59, 18,363.78 and 10,331.35

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Solution

The fourth proportional to 13,316.59, 18,363.78 and 10,331.35 is: 14,247.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,316.59 : 18,363.78 = 10,331.35 : x
  2. Step 2: Convert to fraction form
    13,316.59/18,363.78 = 10,331.35/x
  3. Step 3: Cross multiply
    13,316.59x = 18,363.78 × 10,331.35
  4. Step 4: Simplify right side
    13,316.59x = 189,722,638.50
  5. Step 5: Solve for x
    x = 189,722,638.50/13,316.59
  6. Step 6: Final answer
    x = 14,247.09

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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.