Home / 13,972.64-19,282.25-7,685.02

Finding the Fourth Proportional to 13,972.64, 19,282.25 and 7,685.02

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Solution

The fourth proportional to 13,972.64, 19,282.25 and 7,685.02 is: 10,605.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972.64 : 19,282.25 = 7,685.02 : x
  2. Step 2: Convert to fraction form
    13,972.64/19,282.25 = 7,685.02/x
  3. Step 3: Cross multiply
    13,972.64x = 19,282.25 × 7,685.02
  4. Step 4: Simplify right side
    13,972.64x = 148,184,447.90
  5. Step 5: Solve for x
    x = 148,184,447.90/13,972.64
  6. Step 6: Final answer
    x = 10,605.33

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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.