Home / 38,929-58,400.76-12,630.32

Finding the Fourth Proportional to 38,929, 58,400.76 and 12,630.32

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Solution

The fourth proportional to 38,929, 58,400.76 and 12,630.32 is: 18,947.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,929 : 58,400.76 = 12,630.32 : x
  2. Step 2: Convert to fraction form
    38,929/58,400.76 = 12,630.32/x
  3. Step 3: Cross multiply
    38,929x = 58,400.76 × 12,630.32
  4. Step 4: Simplify right side
    38,929x = 737,620,287.04
  5. Step 5: Solve for x
    x = 737,620,287.04/38,929
  6. Step 6: Final answer
    x = 18,947.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.