Home / 39,222.60-54,127.53-21,317.62

Finding the Fourth Proportional to 39,222.60, 54,127.53 and 21,317.62

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Solution

The fourth proportional to 39,222.60, 54,127.53 and 21,317.62 is: 29,418.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,222.60 : 54,127.53 = 21,317.62 : x
  2. Step 2: Convert to fraction form
    39,222.60/54,127.53 = 21,317.62/x
  3. Step 3: Cross multiply
    39,222.60x = 54,127.53 × 21,317.62
  4. Step 4: Simplify right side
    39,222.60x = 1,153,870,116.08
  5. Step 5: Solve for x
    x = 1,153,870,116.08/39,222.60
  6. Step 6: Final answer
    x = 29,418.50

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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.