Home / 39,170.76-58,743.72-12,869.40

Finding the Fourth Proportional to 39,170.76, 58,743.72 and 12,869.40

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Solution

The fourth proportional to 39,170.76, 58,743.72 and 12,869.40 is: 19,300.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,170.76 : 58,743.72 = 12,869.40 : x
  2. Step 2: Convert to fraction form
    39,170.76/58,743.72 = 12,869.40/x
  3. Step 3: Cross multiply
    39,170.76x = 58,743.72 × 12,869.40
  4. Step 4: Simplify right side
    39,170.76x = 755,996,430.17
  5. Step 5: Solve for x
    x = 755,996,430.17/39,170.76
  6. Step 6: Final answer
    x = 19,300.02

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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.