Home / 10,970.87-15,139.71-6,190.85

Finding the Fourth Proportional to 10,970.87, 15,139.71 and 6,190.85

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Solution

The fourth proportional to 10,970.87, 15,139.71 and 6,190.85 is: 8,543.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,970.87 : 15,139.71 = 6,190.85 : x
  2. Step 2: Convert to fraction form
    10,970.87/15,139.71 = 6,190.85/x
  3. Step 3: Cross multiply
    10,970.87x = 15,139.71 × 6,190.85
  4. Step 4: Simplify right side
    10,970.87x = 93,727,673.65
  5. Step 5: Solve for x
    x = 93,727,673.65/10,970.87
  6. Step 6: Final answer
    x = 8,543.32

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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.