Home / 16,965.12-23,416.32-9,515.52

Finding the Fourth Proportional to 16,965.12, 23,416.32 and 9,515.52

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Solution

The fourth proportional to 16,965.12, 23,416.32 and 9,515.52 is: 13,133.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,965.12 : 23,416.32 = 9,515.52 : x
  2. Step 2: Convert to fraction form
    16,965.12/23,416.32 = 9,515.52/x
  3. Step 3: Cross multiply
    16,965.12x = 23,416.32 × 9,515.52
  4. Step 4: Simplify right side
    16,965.12x = 222,818,461.29
  5. Step 5: Solve for x
    x = 222,818,461.29/16,965.12
  6. Step 6: Final answer
    x = 13,133.92

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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.