Home / 20,907.36-31,364.64-7,053.12

Finding the Fourth Proportional to 20,907.36, 31,364.64 and 7,053.12

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Solution

The fourth proportional to 20,907.36, 31,364.64 and 7,053.12 is: 10,580.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,907.36 : 31,364.64 = 7,053.12 : x
  2. Step 2: Convert to fraction form
    20,907.36/31,364.64 = 7,053.12/x
  3. Step 3: Cross multiply
    20,907.36x = 31,364.64 × 7,053.12
  4. Step 4: Simplify right side
    20,907.36x = 221,218,569.68
  5. Step 5: Solve for x
    x = 221,218,569.68/20,907.36
  6. Step 6: Final answer
    x = 10,580.89

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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.