Home / 13,540.86-18,686.97-7,572.53

Finding the Fourth Proportional to 13,540.86, 18,686.97 and 7,572.53

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Solution

The fourth proportional to 13,540.86, 18,686.97 and 7,572.53 is: 10,450.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540.86 : 18,686.97 = 7,572.53 : x
  2. Step 2: Convert to fraction form
    13,540.86/18,686.97 = 7,572.53/x
  3. Step 3: Cross multiply
    13,540.86x = 18,686.97 × 7,572.53
  4. Step 4: Simplify right side
    13,540.86x = 141,507,547.50
  5. Step 5: Solve for x
    x = 141,507,547.50/13,540.86
  6. Step 6: Final answer
    x = 10,450.41

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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.