Home / 39,868.72-55,021.93-21,966.93

Finding the Fourth Proportional to 39,868.72, 55,021.93 and 21,966.93

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Solution

The fourth proportional to 39,868.72, 55,021.93 and 21,966.93 is: 30,316.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,868.72 : 55,021.93 = 21,966.93 : x
  2. Step 2: Convert to fraction form
    39,868.72/55,021.93 = 21,966.93/x
  3. Step 3: Cross multiply
    39,868.72x = 55,021.93 × 21,966.93
  4. Step 4: Simplify right side
    39,868.72x = 1,208,662,829.86
  5. Step 5: Solve for x
    x = 1,208,662,829.86/39,868.72
  6. Step 6: Final answer
    x = 30,316.07

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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.