Home / 20,693.51-28,552.05-12,195.98

Finding the Fourth Proportional to 20,693.51, 28,552.05 and 12,195.98

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Solution

The fourth proportional to 20,693.51, 28,552.05 and 12,195.98 is: 16,827.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,693.51 : 28,552.05 = 12,195.98 : x
  2. Step 2: Convert to fraction form
    20,693.51/28,552.05 = 12,195.98/x
  3. Step 3: Cross multiply
    20,693.51x = 28,552.05 × 12,195.98
  4. Step 4: Simplify right side
    20,693.51x = 348,220,088.00
  5. Step 5: Solve for x
    x = 348,220,088.00/20,693.51
  6. Step 6: Final answer
    x = 16,827.51

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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.