Home / 39,335.92-54,281.68-21,430.84

Finding the Fourth Proportional to 39,335.92, 54,281.68 and 21,430.84

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Solution

The fourth proportional to 39,335.92, 54,281.68 and 21,430.84 is: 29,573.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,335.92 : 54,281.68 = 21,430.84 : x
  2. Step 2: Convert to fraction form
    39,335.92/54,281.68 = 21,430.84/x
  3. Step 3: Cross multiply
    39,335.92x = 54,281.68 × 21,430.84
  4. Step 4: Simplify right side
    39,335.92x = 1,163,301,999.01
  5. Step 5: Solve for x
    x = 1,163,301,999.01/39,335.92
  6. Step 6: Final answer
    x = 29,573.53

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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.