Home / 20,386.02-28,132.83-11,893.08

Finding the Fourth Proportional to 20,386.02, 28,132.83 and 11,893.08

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Solution

The fourth proportional to 20,386.02, 28,132.83 and 11,893.08 is: 16,412.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386.02 : 28,132.83 = 11,893.08 : x
  2. Step 2: Convert to fraction form
    20,386.02/28,132.83 = 11,893.08/x
  3. Step 3: Cross multiply
    20,386.02x = 28,132.83 × 11,893.08
  4. Step 4: Simplify right side
    20,386.02x = 334,585,997.82
  5. Step 5: Solve for x
    x = 334,585,997.82/20,386.02
  6. Step 6: Final answer
    x = 16,412.52

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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.