Home / 10,140.28-15,210.44-3,214.76

Finding the Fourth Proportional to 10,140.28, 15,210.44 and 3,214.76

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Solution

The fourth proportional to 10,140.28, 15,210.44 and 3,214.76 is: 4,822.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,140.28 : 15,210.44 = 3,214.76 : x
  2. Step 2: Convert to fraction form
    10,140.28/15,210.44 = 3,214.76/x
  3. Step 3: Cross multiply
    10,140.28x = 15,210.44 × 3,214.76
  4. Step 4: Simplify right side
    10,140.28x = 48,897,914.09
  5. Step 5: Solve for x
    x = 48,897,914.09/10,140.28
  6. Step 6: Final answer
    x = 4,822.15

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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.