Home / 39,678.52-54,756.45-21,773.67

Finding the Fourth Proportional to 39,678.52, 54,756.45 and 21,773.67

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Solution

The fourth proportional to 39,678.52, 54,756.45 and 21,773.67 is: 30,047.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,678.52 : 54,756.45 = 21,773.67 : x
  2. Step 2: Convert to fraction form
    39,678.52/54,756.45 = 21,773.67/x
  3. Step 3: Cross multiply
    39,678.52x = 54,756.45 × 21,773.67
  4. Step 4: Simplify right side
    39,678.52x = 1,192,248,872.67
  5. Step 5: Solve for x
    x = 1,192,248,872.67/39,678.52
  6. Step 6: Final answer
    x = 30,047.72

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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.