Home / 21,521.25-32,332.59-12,659.28

Finding the Fourth Proportional to 21,521.25, 32,332.59 and 12,659.28

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Solution

The fourth proportional to 21,521.25, 32,332.59 and 12,659.28 is: 19,018.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,521.25 : 32,332.59 = 12,659.28 : x
  2. Step 2: Convert to fraction form
    21,521.25/32,332.59 = 12,659.28/x
  3. Step 3: Cross multiply
    21,521.25x = 32,332.59 × 12,659.28
  4. Step 4: Simplify right side
    21,521.25x = 409,307,309.94
  5. Step 5: Solve for x
    x = 409,307,309.94/21,521.25
  6. Step 6: Final answer
    x = 19,018.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.