Home / 31,036.14-42,830.64-16,889.76

Finding the Fourth Proportional to 31,036.14, 42,830.64 and 16,889.76

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Solution

The fourth proportional to 31,036.14, 42,830.64 and 16,889.76 is: 23,308.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,036.14 : 42,830.64 = 16,889.76 : x
  2. Step 2: Convert to fraction form
    31,036.14/42,830.64 = 16,889.76/x
  3. Step 3: Cross multiply
    31,036.14x = 42,830.64 × 16,889.76
  4. Step 4: Simplify right side
    31,036.14x = 723,399,230.25
  5. Step 5: Solve for x
    x = 723,399,230.25/31,036.14
  6. Step 6: Final answer
    x = 23,308.29

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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.