Home / 39,801.71-54,925.76-21,895.65

Finding the Fourth Proportional to 39,801.71, 54,925.76 and 21,895.65

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Solution

The fourth proportional to 39,801.71, 54,925.76 and 21,895.65 is: 30,215.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,801.71 : 54,925.76 = 21,895.65 : x
  2. Step 2: Convert to fraction form
    39,801.71/54,925.76 = 21,895.65/x
  3. Step 3: Cross multiply
    39,801.71x = 54,925.76 × 21,895.65
  4. Step 4: Simplify right side
    39,801.71x = 1,202,635,271.68
  5. Step 5: Solve for x
    x = 1,202,635,271.68/39,801.71
  6. Step 6: Final answer
    x = 30,215.67

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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.