Home / 14,268.80-19,690.08-7,981.04

Finding the Fourth Proportional to 14,268.80, 19,690.08 and 7,981.04

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Solution

The fourth proportional to 14,268.80, 19,690.08 and 7,981.04 is: 11,013.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,268.80 : 19,690.08 = 7,981.04 : x
  2. Step 2: Convert to fraction form
    14,268.80/19,690.08 = 7,981.04/x
  3. Step 3: Cross multiply
    14,268.80x = 19,690.08 × 7,981.04
  4. Step 4: Simplify right side
    14,268.80x = 157,147,316.08
  5. Step 5: Solve for x
    x = 157,147,316.08/14,268.80
  6. Step 6: Final answer
    x = 11,013.35

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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.