Home / 13,061.75-18,030.36-8,815.32

Finding the Fourth Proportional to 13,061.75, 18,030.36 and 8,815.32

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Solution

The fourth proportional to 13,061.75, 18,030.36 and 8,815.32 is: 12,168.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,061.75 : 18,030.36 = 8,815.32 : x
  2. Step 2: Convert to fraction form
    13,061.75/18,030.36 = 8,815.32/x
  3. Step 3: Cross multiply
    13,061.75x = 18,030.36 × 8,815.32
  4. Step 4: Simplify right side
    13,061.75x = 158,943,393.12
  5. Step 5: Solve for x
    x = 158,943,393.12/13,061.75
  6. Step 6: Final answer
    x = 12,168.62

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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.