Home / 12,661.04-18,995.40-8,970.42

Finding the Fourth Proportional to 12,661.04, 18,995.40 and 8,970.42

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Solution

The fourth proportional to 12,661.04, 18,995.40 and 8,970.42 is: 13,458.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,661.04 : 18,995.40 = 8,970.42 : x
  2. Step 2: Convert to fraction form
    12,661.04/18,995.40 = 8,970.42/x
  3. Step 3: Cross multiply
    12,661.04x = 18,995.40 × 8,970.42
  4. Step 4: Simplify right side
    12,661.04x = 170,396,716.07
  5. Step 5: Solve for x
    x = 170,396,716.07/12,661.04
  6. Step 6: Final answer
    x = 13,458.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.