Home / 31,007.04-42,789.60-16,860.48

Finding the Fourth Proportional to 31,007.04, 42,789.60 and 16,860.48

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Solution

The fourth proportional to 31,007.04, 42,789.60 and 16,860.48 is: 23,267.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,007.04 : 42,789.60 = 16,860.48 : x
  2. Step 2: Convert to fraction form
    31,007.04/42,789.60 = 16,860.48/x
  3. Step 3: Cross multiply
    31,007.04x = 42,789.60 × 16,860.48
  4. Step 4: Simplify right side
    31,007.04x = 721,453,195.01
  5. Step 5: Solve for x
    x = 721,453,195.01/31,007.04
  6. Step 6: Final answer
    x = 23,267.40

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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.