Home / 10,290.40-14,186.21-7,305.14

Finding the Fourth Proportional to 10,290.40, 14,186.21 and 7,305.14

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Solution

The fourth proportional to 10,290.40, 14,186.21 and 7,305.14 is: 10,070.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,290.40 : 14,186.21 = 7,305.14 : x
  2. Step 2: Convert to fraction form
    10,290.40/14,186.21 = 7,305.14/x
  3. Step 3: Cross multiply
    10,290.40x = 14,186.21 × 7,305.14
  4. Step 4: Simplify right side
    10,290.40x = 103,632,249.06
  5. Step 5: Solve for x
    x = 103,632,249.06/10,290.40
  6. Step 6: Final answer
    x = 10,070.77

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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.