Home / 10,870.75-15,000.90-6,089.86

Finding the Fourth Proportional to 10,870.75, 15,000.90 and 6,089.86

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Solution

The fourth proportional to 10,870.75, 15,000.90 and 6,089.86 is: 8,403.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,870.75 : 15,000.90 = 6,089.86 : x
  2. Step 2: Convert to fraction form
    10,870.75/15,000.90 = 6,089.86/x
  3. Step 3: Cross multiply
    10,870.75x = 15,000.90 × 6,089.86
  4. Step 4: Simplify right side
    10,870.75x = 91,353,305.87
  5. Step 5: Solve for x
    x = 91,353,305.87/10,870.75
  6. Step 6: Final answer
    x = 8,403.59

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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.