Home / 15,140.77-20,895.24-8,426.37

Finding the Fourth Proportional to 15,140.77, 20,895.24 and 8,426.37

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Solution

The fourth proportional to 15,140.77, 20,895.24 and 8,426.37 is: 11,628.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,140.77 : 20,895.24 = 8,426.37 : x
  2. Step 2: Convert to fraction form
    15,140.77/20,895.24 = 8,426.37/x
  3. Step 3: Cross multiply
    15,140.77x = 20,895.24 × 8,426.37
  4. Step 4: Simplify right side
    15,140.77x = 176,070,981.35
  5. Step 5: Solve for x
    x = 176,070,981.35/15,140.77
  6. Step 6: Final answer
    x = 11,628.94

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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.