Home / 10,405.09-14,360-5,690.08

Finding the Fourth Proportional to 10,405.09, 14,360 and 5,690.08

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Solution

The fourth proportional to 10,405.09, 14,360 and 5,690.08 is: 7,852.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,405.09 : 14,360 = 5,690.08 : x
  2. Step 2: Convert to fraction form
    10,405.09/14,360 = 5,690.08/x
  3. Step 3: Cross multiply
    10,405.09x = 14,360 × 5,690.08
  4. Step 4: Simplify right side
    10,405.09x = 81,709,548.80
  5. Step 5: Solve for x
    x = 81,709,548.80/10,405.09
  6. Step 6: Final answer
    x = 7,852.84

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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.