Home / 38,680.79-53,338.95-28,630.31

Finding the Fourth Proportional to 38,680.79, 53,338.95 and 28,630.31

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Solution

The fourth proportional to 38,680.79, 53,338.95 and 28,630.31 is: 39,479.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,680.79 : 53,338.95 = 28,630.31 : x
  2. Step 2: Convert to fraction form
    38,680.79/53,338.95 = 28,630.31/x
  3. Step 3: Cross multiply
    38,680.79x = 53,338.95 × 28,630.31
  4. Step 4: Simplify right side
    38,680.79x = 1,527,110,673.57
  5. Step 5: Solve for x
    x = 1,527,110,673.57/38,680.79
  6. Step 6: Final answer
    x = 39,479.82

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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.