Home / 10,215.85-15,323.47-2,820.76

Finding the Fourth Proportional to 10,215.85, 15,323.47 and 2,820.76

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Solution

The fourth proportional to 10,215.85, 15,323.47 and 2,820.76 is: 4,231.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,215.85 : 15,323.47 = 2,820.76 : x
  2. Step 2: Convert to fraction form
    10,215.85/15,323.47 = 2,820.76/x
  3. Step 3: Cross multiply
    10,215.85x = 15,323.47 × 2,820.76
  4. Step 4: Simplify right side
    10,215.85x = 43,223,831.24
  5. Step 5: Solve for x
    x = 43,223,831.24/10,215.85
  6. Step 6: Final answer
    x = 4,231.06

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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.