Home / 39,688.65-54,770.18-21,783.94

Finding the Fourth Proportional to 39,688.65, 54,770.18 and 21,783.94

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Solution

The fourth proportional to 39,688.65, 54,770.18 and 21,783.94 is: 30,061.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,688.65 : 54,770.18 = 21,783.94 : x
  2. Step 2: Convert to fraction form
    39,688.65/54,770.18 = 21,783.94/x
  3. Step 3: Cross multiply
    39,688.65x = 54,770.18 × 21,783.94
  4. Step 4: Simplify right side
    39,688.65x = 1,193,110,069.06
  5. Step 5: Solve for x
    x = 1,193,110,069.06/39,688.65
  6. Step 6: Final answer
    x = 30,061.74

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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.