Home / 31,036.38-42,830.20-16,889.32

Finding the Fourth Proportional to 31,036.38, 42,830.20 and 16,889.32

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Solution

The fourth proportional to 31,036.38, 42,830.20 and 16,889.32 is: 23,307.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,036.38 : 42,830.20 = 16,889.32 : x
  2. Step 2: Convert to fraction form
    31,036.38/42,830.20 = 16,889.32/x
  3. Step 3: Cross multiply
    31,036.38x = 42,830.20 × 16,889.32
  4. Step 4: Simplify right side
    31,036.38x = 723,372,953.46
  5. Step 5: Solve for x
    x = 723,372,953.46/31,036.38
  6. Step 6: Final answer
    x = 23,307.26

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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.