Home / 31,130.14-42,959.58-16,983.08

Finding the Fourth Proportional to 31,130.14, 42,959.58 and 16,983.08

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Solution

The fourth proportional to 31,130.14, 42,959.58 and 16,983.08 is: 23,436.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,130.14 : 42,959.58 = 16,983.08 : x
  2. Step 2: Convert to fraction form
    31,130.14/42,959.58 = 16,983.08/x
  3. Step 3: Cross multiply
    31,130.14x = 42,959.58 × 16,983.08
  4. Step 4: Simplify right side
    31,130.14x = 729,585,983.91
  5. Step 5: Solve for x
    x = 729,585,983.91/31,130.14
  6. Step 6: Final answer
    x = 23,436.64

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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.