Home / 28,412.84-39,209.99-15,666.48

Finding the Fourth Proportional to 28,412.84, 39,209.99 and 15,666.48

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Solution

The fourth proportional to 28,412.84, 39,209.99 and 15,666.48 is: 21,619.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,412.84 : 39,209.99 = 15,666.48 : x
  2. Step 2: Convert to fraction form
    28,412.84/39,209.99 = 15,666.48/x
  3. Step 3: Cross multiply
    28,412.84x = 39,209.99 × 15,666.48
  4. Step 4: Simplify right side
    28,412.84x = 614,282,524.14
  5. Step 5: Solve for x
    x = 614,282,524.14/28,412.84
  6. Step 6: Final answer
    x = 21,619.89

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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.