Home / 20,722.65-28,603.44-14,771.58

Finding the Fourth Proportional to 20,722.65, 28,603.44 and 14,771.58

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Solution

The fourth proportional to 20,722.65, 28,603.44 and 14,771.58 is: 20,389.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.65 : 28,603.44 = 14,771.58 : x
  2. Step 2: Convert to fraction form
    20,722.65/28,603.44 = 14,771.58/x
  3. Step 3: Cross multiply
    20,722.65x = 28,603.44 × 14,771.58
  4. Step 4: Simplify right side
    20,722.65x = 422,518,002.24
  5. Step 5: Solve for x
    x = 422,518,002.24/20,722.65
  6. Step 6: Final answer
    x = 20,389.19

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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.