Home / 10,812.12-14,913-7,028.24

Finding the Fourth Proportional to 10,812.12, 14,913 and 7,028.24

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Solution

The fourth proportional to 10,812.12, 14,913 and 7,028.24 is: 9,693.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,812.12 : 14,913 = 7,028.24 : x
  2. Step 2: Convert to fraction form
    10,812.12/14,913 = 7,028.24/x
  3. Step 3: Cross multiply
    10,812.12x = 14,913 × 7,028.24
  4. Step 4: Simplify right side
    10,812.12x = 104,812,143.12
  5. Step 5: Solve for x
    x = 104,812,143.12/10,812.12
  6. Step 6: Final answer
    x = 9,693.95

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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.