Home / 20,528.19-30,782.70-10,664.82

Finding the Fourth Proportional to 20,528.19, 30,782.70 and 10,664.82

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Solution

The fourth proportional to 20,528.19, 30,782.70 and 10,664.82 is: 15,992.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528.19 : 30,782.70 = 10,664.82 : x
  2. Step 2: Convert to fraction form
    20,528.19/30,782.70 = 10,664.82/x
  3. Step 3: Cross multiply
    20,528.19x = 30,782.70 × 10,664.82
  4. Step 4: Simplify right side
    20,528.19x = 328,291,954.61
  5. Step 5: Solve for x
    x = 328,291,954.61/20,528.19
  6. Step 6: Final answer
    x = 15,992.25

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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.