Home / 20,590.09-28,393.50-18,314.23

Finding the Fourth Proportional to 20,590.09, 28,393.50 and 18,314.23

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Solution

The fourth proportional to 20,590.09, 28,393.50 and 18,314.23 is: 25,255.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,590.09 : 28,393.50 = 18,314.23 : x
  2. Step 2: Convert to fraction form
    20,590.09/28,393.50 = 18,314.23/x
  3. Step 3: Cross multiply
    20,590.09x = 28,393.50 × 18,314.23
  4. Step 4: Simplify right side
    20,590.09x = 520,005,089.51
  5. Step 5: Solve for x
    x = 520,005,089.51/20,590.09
  6. Step 6: Final answer
    x = 25,255.11

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Half scale
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Double scale
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Similar ratio
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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.