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Finding the Fourth Proportional to 10,145.99, 13,999.93 and 5,669.93

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Solution

The fourth proportional to 10,145.99, 13,999.93 and 5,669.93 is: 7,823.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,145.99 : 13,999.93 = 5,669.93 : x
  2. Step 2: Convert to fraction form
    10,145.99/13,999.93 = 5,669.93/x
  3. Step 3: Cross multiply
    10,145.99x = 13,999.93 × 5,669.93
  4. Step 4: Simplify right side
    10,145.99x = 79,378,643.93
  5. Step 5: Solve for x
    x = 79,378,643.93/10,145.99
  6. Step 6: Final answer
    x = 7,823.65

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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.