Home / 15,860.28-21,885.12-9,146.16

Finding the Fourth Proportional to 15,860.28, 21,885.12 and 9,146.16

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Solution

The fourth proportional to 15,860.28, 21,885.12 and 9,146.16 is: 12,620.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,860.28 : 21,885.12 = 9,146.16 : x
  2. Step 2: Convert to fraction form
    15,860.28/21,885.12 = 9,146.16/x
  3. Step 3: Cross multiply
    15,860.28x = 21,885.12 × 9,146.16
  4. Step 4: Simplify right side
    15,860.28x = 200,164,809.14
  5. Step 5: Solve for x
    x = 200,164,809.14/15,860.28
  6. Step 6: Final answer
    x = 12,620.51

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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.