Home / 13,445.74-18,542.10-8,969.68

Finding the Fourth Proportional to 13,445.74, 18,542.10 and 8,969.68

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Solution

The fourth proportional to 13,445.74, 18,542.10 and 8,969.68 is: 12,369.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.74 : 18,542.10 = 8,969.68 : x
  2. Step 2: Convert to fraction form
    13,445.74/18,542.10 = 8,969.68/x
  3. Step 3: Cross multiply
    13,445.74x = 18,542.10 × 8,969.68
  4. Step 4: Simplify right side
    13,445.74x = 166,316,703.53
  5. Step 5: Solve for x
    x = 166,316,703.53/13,445.74
  6. Step 6: Final answer
    x = 12,369.47

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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.