Home / 10,315.88-15,476.43-2,920.40

Finding the Fourth Proportional to 10,315.88, 15,476.43 and 2,920.40

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Solution

The fourth proportional to 10,315.88, 15,476.43 and 2,920.40 is: 4,381.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,315.88 : 15,476.43 = 2,920.40 : x
  2. Step 2: Convert to fraction form
    10,315.88/15,476.43 = 2,920.40/x
  3. Step 3: Cross multiply
    10,315.88x = 15,476.43 × 2,920.40
  4. Step 4: Simplify right side
    10,315.88x = 45,197,351.57
  5. Step 5: Solve for x
    x = 45,197,351.57/10,315.88
  6. Step 6: Final answer
    x = 4,381.34

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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.