Home / 31,130.16-42,958.80-16,983.24

Finding the Fourth Proportional to 31,130.16, 42,958.80 and 16,983.24

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Solution

The fourth proportional to 31,130.16, 42,958.80 and 16,983.24 is: 23,436.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,130.16 : 42,958.80 = 16,983.24 : x
  2. Step 2: Convert to fraction form
    31,130.16/42,958.80 = 16,983.24/x
  3. Step 3: Cross multiply
    31,130.16x = 42,958.80 × 16,983.24
  4. Step 4: Simplify right side
    31,130.16x = 729,579,610.51
  5. Step 5: Solve for x
    x = 729,579,610.51/31,130.16
  6. Step 6: Final answer
    x = 23,436.42

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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.