Home / 31,130.09-42,959.63-16,983.23

Finding the Fourth Proportional to 31,130.09, 42,959.63 and 16,983.23

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Solution

The fourth proportional to 31,130.09, 42,959.63 and 16,983.23 is: 23,436.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,130.09 : 42,959.63 = 16,983.23 : x
  2. Step 2: Convert to fraction form
    31,130.09/42,959.63 = 16,983.23/x
  3. Step 3: Cross multiply
    31,130.09x = 42,959.63 × 16,983.23
  4. Step 4: Simplify right side
    31,130.09x = 729,593,277.00
  5. Step 5: Solve for x
    x = 729,593,277.00/31,130.09
  6. Step 6: Final answer
    x = 23,436.92

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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.