Home / 10,315.05-15,470.09-4,763.07

Finding the Fourth Proportional to 10,315.05, 15,470.09 and 4,763.07

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Solution

The fourth proportional to 10,315.05, 15,470.09 and 4,763.07 is: 7,143.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,315.05 : 15,470.09 = 4,763.07 : x
  2. Step 2: Convert to fraction form
    10,315.05/15,470.09 = 4,763.07/x
  3. Step 3: Cross multiply
    10,315.05x = 15,470.09 × 4,763.07
  4. Step 4: Simplify right side
    10,315.05x = 73,685,121.58
  5. Step 5: Solve for x
    x = 73,685,121.58/10,315.05
  6. Step 6: Final answer
    x = 7,143.46

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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.