Home / 39,688.19-54,770.71-21,783.04

Finding the Fourth Proportional to 39,688.19, 54,770.71 and 21,783.04

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Solution

The fourth proportional to 39,688.19, 54,770.71 and 21,783.04 is: 30,061.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,688.19 : 54,770.71 = 21,783.04 : x
  2. Step 2: Convert to fraction form
    39,688.19/54,770.71 = 21,783.04/x
  3. Step 3: Cross multiply
    39,688.19x = 54,770.71 × 21,783.04
  4. Step 4: Simplify right side
    39,688.19x = 1,193,072,566.76
  5. Step 5: Solve for x
    x = 1,193,072,566.76/39,688.19
  6. Step 6: Final answer
    x = 30,061.15

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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.