Home / 25,709.80-38,564.70-21,332.20

Finding the Fourth Proportional to 25,709.80, 38,564.70 and 21,332.20

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Solution

The fourth proportional to 25,709.80, 38,564.70 and 21,332.20 is: 31,998.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,709.80 : 38,564.70 = 21,332.20 : x
  2. Step 2: Convert to fraction form
    25,709.80/38,564.70 = 21,332.20/x
  3. Step 3: Cross multiply
    25,709.80x = 38,564.70 × 21,332.20
  4. Step 4: Simplify right side
    25,709.80x = 822,669,893.34
  5. Step 5: Solve for x
    x = 822,669,893.34/25,709.80
  6. Step 6: Final answer
    x = 31,998.30

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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.