Home / 20,588.04-28,401.03-13,021.61

Finding the Fourth Proportional to 20,588.04, 28,401.03 and 13,021.61

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Solution

The fourth proportional to 20,588.04, 28,401.03 and 13,021.61 is: 17,963.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,588.04 : 28,401.03 = 13,021.61 : x
  2. Step 2: Convert to fraction form
    20,588.04/28,401.03 = 13,021.61/x
  3. Step 3: Cross multiply
    20,588.04x = 28,401.03 × 13,021.61
  4. Step 4: Simplify right side
    20,588.04x = 369,826,994.25
  5. Step 5: Solve for x
    x = 369,826,994.25/20,588.04
  6. Step 6: Final answer
    x = 17,963.20

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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.