Home / 13,385.86-18,473.55-7,418.10

Finding the Fourth Proportional to 13,385.86, 18,473.55 and 7,418.10

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Solution

The fourth proportional to 13,385.86, 18,473.55 and 7,418.10 is: 10,237.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.86 : 18,473.55 = 7,418.10 : x
  2. Step 2: Convert to fraction form
    13,385.86/18,473.55 = 7,418.10/x
  3. Step 3: Cross multiply
    13,385.86x = 18,473.55 × 7,418.10
  4. Step 4: Simplify right side
    13,385.86x = 137,038,641.26
  5. Step 5: Solve for x
    x = 137,038,641.26/13,385.86
  6. Step 6: Final answer
    x = 10,237.57

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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.