Home / 28,187.02-38,924.23-21,101.14

Finding the Fourth Proportional to 28,187.02, 38,924.23 and 21,101.14

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Solution

The fourth proportional to 28,187.02, 38,924.23 and 21,101.14 is: 29,139.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,187.02 : 38,924.23 = 21,101.14 : x
  2. Step 2: Convert to fraction form
    28,187.02/38,924.23 = 21,101.14/x
  3. Step 3: Cross multiply
    28,187.02x = 38,924.23 × 21,101.14
  4. Step 4: Simplify right side
    28,187.02x = 821,345,432.00
  5. Step 5: Solve for x
    x = 821,345,432.00/28,187.02
  6. Step 6: Final answer
    x = 29,139.14

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Half scale
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Double scale
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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.