Home / 20,838.37-28,752.51-12,343.18

Finding the Fourth Proportional to 20,838.37, 28,752.51 and 12,343.18

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Solution

The fourth proportional to 20,838.37, 28,752.51 and 12,343.18 is: 17,030.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,838.37 : 28,752.51 = 12,343.18 : x
  2. Step 2: Convert to fraction form
    20,838.37/28,752.51 = 12,343.18/x
  3. Step 3: Cross multiply
    20,838.37x = 28,752.51 × 12,343.18
  4. Step 4: Simplify right side
    20,838.37x = 354,897,406.38
  5. Step 5: Solve for x
    x = 354,897,406.38/20,838.37
  6. Step 6: Final answer
    x = 17,030.96

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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.