Home / 39,594.96-54,640.56-21,689.76

Finding the Fourth Proportional to 39,594.96, 54,640.56 and 21,689.76

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Solution

The fourth proportional to 39,594.96, 54,640.56 and 21,689.76 is: 29,931.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,594.96 : 54,640.56 = 21,689.76 : x
  2. Step 2: Convert to fraction form
    39,594.96/54,640.56 = 21,689.76/x
  3. Step 3: Cross multiply
    39,594.96x = 54,640.56 × 21,689.76
  4. Step 4: Simplify right side
    39,594.96x = 1,185,140,632.67
  5. Step 5: Solve for x
    x = 1,185,140,632.67/39,594.96
  6. Step 6: Final answer
    x = 29,931.60

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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.