Home / 20,838.04-28,756.73-11,886.07

Finding the Fourth Proportional to 20,838.04, 28,756.73 and 11,886.07

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Solution

The fourth proportional to 20,838.04, 28,756.73 and 11,886.07 is: 16,402.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,838.04 : 28,756.73 = 11,886.07 : x
  2. Step 2: Convert to fraction form
    20,838.04/28,756.73 = 11,886.07/x
  3. Step 3: Cross multiply
    20,838.04x = 28,756.73 × 11,886.07
  4. Step 4: Simplify right side
    20,838.04x = 341,804,505.75
  5. Step 5: Solve for x
    x = 341,804,505.75/20,838.04
  6. Step 6: Final answer
    x = 16,402.91

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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.