Home / 28,420.04-39,217.82-15,673.26

Finding the Fourth Proportional to 28,420.04, 39,217.82 and 15,673.26

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Solution

The fourth proportional to 28,420.04, 39,217.82 and 15,673.26 is: 21,628.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,420.04 : 39,217.82 = 15,673.26 : x
  2. Step 2: Convert to fraction form
    28,420.04/39,217.82 = 15,673.26/x
  3. Step 3: Cross multiply
    28,420.04x = 39,217.82 × 15,673.26
  4. Step 4: Simplify right side
    28,420.04x = 614,671,011.13
  5. Step 5: Solve for x
    x = 614,671,011.13/28,420.04
  6. Step 6: Final answer
    x = 21,628.09

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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.