Home / 21,475.77-29,659.08-14,778.69

Finding the Fourth Proportional to 21,475.77, 29,659.08 and 14,778.69

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Solution

The fourth proportional to 21,475.77, 29,659.08 and 14,778.69 is: 20,410.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,475.77 : 29,659.08 = 14,778.69 : x
  2. Step 2: Convert to fraction form
    21,475.77/29,659.08 = 14,778.69/x
  3. Step 3: Cross multiply
    21,475.77x = 29,659.08 × 14,778.69
  4. Step 4: Simplify right side
    21,475.77x = 438,322,349.01
  5. Step 5: Solve for x
    x = 438,322,349.01/21,475.77
  6. Step 6: Final answer
    x = 20,410.09

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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.