Home / 14,114.34-21,171.90-7,870.86

Finding the Fourth Proportional to 14,114.34, 21,171.90 and 7,870.86

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Solution

The fourth proportional to 14,114.34, 21,171.90 and 7,870.86 is: 11,806.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,114.34 : 21,171.90 = 7,870.86 : x
  2. Step 2: Convert to fraction form
    14,114.34/21,171.90 = 7,870.86/x
  3. Step 3: Cross multiply
    14,114.34x = 21,171.90 × 7,870.86
  4. Step 4: Simplify right side
    14,114.34x = 166,641,060.83
  5. Step 5: Solve for x
    x = 166,641,060.83/14,114.34
  6. Step 6: Final answer
    x = 11,806.51

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1.5x scale

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.