Home / 15,971.45-22,038.68-9,165.12

Finding the Fourth Proportional to 15,971.45, 22,038.68 and 9,165.12

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Solution

The fourth proportional to 15,971.45, 22,038.68 and 9,165.12 is: 12,646.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,971.45 : 22,038.68 = 9,165.12 : x
  2. Step 2: Convert to fraction form
    15,971.45/22,038.68 = 9,165.12/x
  3. Step 3: Cross multiply
    15,971.45x = 22,038.68 × 9,165.12
  4. Step 4: Simplify right side
    15,971.45x = 201,987,087.11
  5. Step 5: Solve for x
    x = 201,987,087.11/15,971.45
  6. Step 6: Final answer
    x = 12,646.76

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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.