Home / 10,340.55-15,510.83-5,411.70

Finding the Fourth Proportional to 10,340.55, 15,510.83 and 5,411.70

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Solution

The fourth proportional to 10,340.55, 15,510.83 and 5,411.70 is: 8,117.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,340.55 : 15,510.83 = 5,411.70 : x
  2. Step 2: Convert to fraction form
    10,340.55/15,510.83 = 5,411.70/x
  3. Step 3: Cross multiply
    10,340.55x = 15,510.83 × 5,411.70
  4. Step 4: Simplify right side
    10,340.55x = 83,939,931.65
  5. Step 5: Solve for x
    x = 83,939,931.65/10,340.55
  6. Step 6: Final answer
    x = 8,117.55

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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.