Home / 14,155.60-19,535.92-7,870

Finding the Fourth Proportional to 14,155.60, 19,535.92 and 7,870

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Solution

The fourth proportional to 14,155.60, 19,535.92 and 7,870 is: 10,861.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,155.60 : 19,535.92 = 7,870 : x
  2. Step 2: Convert to fraction form
    14,155.60/19,535.92 = 7,870/x
  3. Step 3: Cross multiply
    14,155.60x = 19,535.92 × 7,870
  4. Step 4: Simplify right side
    14,155.60x = 153,747,690.40
  5. Step 5: Solve for x
    x = 153,747,690.40/14,155.60
  6. Step 6: Final answer
    x = 10,861.26

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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.