Home / 42,693.20-63,954.06-21,281.34

Finding the Fourth Proportional to 42,693.20, 63,954.06 and 21,281.34

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Solution

The fourth proportional to 42,693.20, 63,954.06 and 21,281.34 is: 31,879.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,693.20 : 63,954.06 = 21,281.34 : x
  2. Step 2: Convert to fraction form
    42,693.20/63,954.06 = 21,281.34/x
  3. Step 3: Cross multiply
    42,693.20x = 63,954.06 × 21,281.34
  4. Step 4: Simplify right side
    42,693.20x = 1,361,028,095.24
  5. Step 5: Solve for x
    x = 1,361,028,095.24/42,693.20
  6. Step 6: Final answer
    x = 31,879.27

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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.