Home / 39,290.84-54,222.69-21,386.49

Finding the Fourth Proportional to 39,290.84, 54,222.69 and 21,386.49

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Solution

The fourth proportional to 39,290.84, 54,222.69 and 21,386.49 is: 29,514.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,290.84 : 54,222.69 = 21,386.49 : x
  2. Step 2: Convert to fraction form
    39,290.84/54,222.69 = 21,386.49/x
  3. Step 3: Cross multiply
    39,290.84x = 54,222.69 × 21,386.49
  4. Step 4: Simplify right side
    39,290.84x = 1,159,632,910.53
  5. Step 5: Solve for x
    x = 1,159,632,910.53/39,290.84
  6. Step 6: Final answer
    x = 29,514.08

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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.