Home / 15,140.90-20,894.23-8,426.53

Finding the Fourth Proportional to 15,140.90, 20,894.23 and 8,426.53

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Solution

The fourth proportional to 15,140.90, 20,894.23 and 8,426.53 is: 11,628.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,140.90 : 20,894.23 = 8,426.53 : x
  2. Step 2: Convert to fraction form
    15,140.90/20,894.23 = 8,426.53/x
  3. Step 3: Cross multiply
    15,140.90x = 20,894.23 × 8,426.53
  4. Step 4: Simplify right side
    15,140.90x = 176,065,860.14
  5. Step 5: Solve for x
    x = 176,065,860.14/15,140.90
  6. Step 6: Final answer
    x = 11,628.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.