Home / 13,316.74-18,378.89-8,537.50

Finding the Fourth Proportional to 13,316.74, 18,378.89 and 8,537.50

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Solution

The fourth proportional to 13,316.74, 18,378.89 and 8,537.50 is: 11,782.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,316.74 : 18,378.89 = 8,537.50 : x
  2. Step 2: Convert to fraction form
    13,316.74/18,378.89 = 8,537.50/x
  3. Step 3: Cross multiply
    13,316.74x = 18,378.89 × 8,537.50
  4. Step 4: Simplify right side
    13,316.74x = 156,909,773.38
  5. Step 5: Solve for x
    x = 156,909,773.38/13,316.74
  6. Step 6: Final answer
    x = 11,782.90

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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.