Home / 10,145.56-13,999.20-5,669.08

Finding the Fourth Proportional to 10,145.56, 13,999.20 and 5,669.08

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Solution

The fourth proportional to 10,145.56, 13,999.20 and 5,669.08 is: 7,822.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,145.56 : 13,999.20 = 5,669.08 : x
  2. Step 2: Convert to fraction form
    10,145.56/13,999.20 = 5,669.08/x
  3. Step 3: Cross multiply
    10,145.56x = 13,999.20 × 5,669.08
  4. Step 4: Simplify right side
    10,145.56x = 79,362,584.74
  5. Step 5: Solve for x
    x = 79,362,584.74/10,145.56
  6. Step 6: Final answer
    x = 7,822.40

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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.