Home / 14,140.10-21,214.28-6,750.78

Finding the Fourth Proportional to 14,140.10, 21,214.28 and 6,750.78

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Solution

The fourth proportional to 14,140.10, 21,214.28 and 6,750.78 is: 10,128.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,140.10 : 21,214.28 = 6,750.78 : x
  2. Step 2: Convert to fraction form
    14,140.10/21,214.28 = 6,750.78/x
  3. Step 3: Cross multiply
    14,140.10x = 21,214.28 × 6,750.78
  4. Step 4: Simplify right side
    14,140.10x = 143,212,903.38
  5. Step 5: Solve for x
    x = 143,212,903.38/14,140.10
  6. Step 6: Final answer
    x = 10,128.14

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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.