Home / 20,437.09-28,203.44-12,370.64

Finding the Fourth Proportional to 20,437.09, 28,203.44 and 12,370.64

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Solution

The fourth proportional to 20,437.09, 28,203.44 and 12,370.64 is: 17,071.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.09 : 28,203.44 = 12,370.64 : x
  2. Step 2: Convert to fraction form
    20,437.09/28,203.44 = 12,370.64/x
  3. Step 3: Cross multiply
    20,437.09x = 28,203.44 × 12,370.64
  4. Step 4: Simplify right side
    20,437.09x = 348,894,400.13
  5. Step 5: Solve for x
    x = 348,894,400.13/20,437.09
  6. Step 6: Final answer
    x = 17,071.63

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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.