Home / 13,509.03-18,642.15-7,541.25

Finding the Fourth Proportional to 13,509.03, 18,642.15 and 7,541.25

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Solution

The fourth proportional to 13,509.03, 18,642.15 and 7,541.25 is: 10,406.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,509.03 : 18,642.15 = 7,541.25 : x
  2. Step 2: Convert to fraction form
    13,509.03/18,642.15 = 7,541.25/x
  3. Step 3: Cross multiply
    13,509.03x = 18,642.15 × 7,541.25
  4. Step 4: Simplify right side
    13,509.03x = 140,585,113.69
  5. Step 5: Solve for x
    x = 140,585,113.69/13,509.03
  6. Step 6: Final answer
    x = 10,406.75

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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.