Home / 10,114.35-13,970.31-7,143.45

Finding the Fourth Proportional to 10,114.35, 13,970.31 and 7,143.45

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Solution

The fourth proportional to 10,114.35, 13,970.31 and 7,143.45 is: 9,866.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,114.35 : 13,970.31 = 7,143.45 : x
  2. Step 2: Convert to fraction form
    10,114.35/13,970.31 = 7,143.45/x
  3. Step 3: Cross multiply
    10,114.35x = 13,970.31 × 7,143.45
  4. Step 4: Simplify right side
    10,114.35x = 99,796,210.97
  5. Step 5: Solve for x
    x = 99,796,210.97/10,114.35
  6. Step 6: Final answer
    x = 9,866.79

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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.