Home / 10,970.29-15,138.30-6,190.98

Finding the Fourth Proportional to 10,970.29, 15,138.30 and 6,190.98

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Solution

The fourth proportional to 10,970.29, 15,138.30 and 6,190.98 is: 8,543.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,970.29 : 15,138.30 = 6,190.98 : x
  2. Step 2: Convert to fraction form
    10,970.29/15,138.30 = 6,190.98/x
  3. Step 3: Cross multiply
    10,970.29x = 15,138.30 × 6,190.98
  4. Step 4: Simplify right side
    10,970.29x = 93,720,912.53
  5. Step 5: Solve for x
    x = 93,720,912.53/10,970.29
  6. Step 6: Final answer
    x = 8,543.16

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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.