Home / 15,722.31-21,698.91-14,393.64

Finding the Fourth Proportional to 15,722.31, 21,698.91 and 14,393.64

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Solution

The fourth proportional to 15,722.31, 21,698.91 and 14,393.64 is: 19,865.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,722.31 : 21,698.91 = 14,393.64 : x
  2. Step 2: Convert to fraction form
    15,722.31/21,698.91 = 14,393.64/x
  3. Step 3: Cross multiply
    15,722.31x = 21,698.91 × 14,393.64
  4. Step 4: Simplify right side
    15,722.31x = 312,326,298.93
  5. Step 5: Solve for x
    x = 312,326,298.93/15,722.31
  6. Step 6: Final answer
    x = 19,865.17

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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.