Home / 10,209.71-15,315.27-2,813.40

Finding the Fourth Proportional to 10,209.71, 15,315.27 and 2,813.40

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Solution

The fourth proportional to 10,209.71, 15,315.27 and 2,813.40 is: 4,220.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,209.71 : 15,315.27 = 2,813.40 : x
  2. Step 2: Convert to fraction form
    10,209.71/15,315.27 = 2,813.40/x
  3. Step 3: Cross multiply
    10,209.71x = 15,315.27 × 2,813.40
  4. Step 4: Simplify right side
    10,209.71x = 43,087,980.62
  5. Step 5: Solve for x
    x = 43,087,980.62/10,209.71
  6. Step 6: Final answer
    x = 4,220.29

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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.