Home / 39,678.46-59,488.52-18,916.54

Finding the Fourth Proportional to 39,678.46, 59,488.52 and 18,916.54

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Solution

The fourth proportional to 39,678.46, 59,488.52 and 18,916.54 is: 28,360.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,678.46 : 59,488.52 = 18,916.54 : x
  2. Step 2: Convert to fraction form
    39,678.46/59,488.52 = 18,916.54/x
  3. Step 3: Cross multiply
    39,678.46x = 59,488.52 × 18,916.54
  4. Step 4: Simplify right side
    39,678.46x = 1,125,316,968.12
  5. Step 5: Solve for x
    x = 1,125,316,968.12/39,678.46
  6. Step 6: Final answer
    x = 28,360.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.