Home / 15,356.76-21,190.69-8,642.27

Finding the Fourth Proportional to 15,356.76, 21,190.69 and 8,642.27

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Solution

The fourth proportional to 15,356.76, 21,190.69 and 8,642.27 is: 11,925.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,356.76 : 21,190.69 = 8,642.27 : x
  2. Step 2: Convert to fraction form
    15,356.76/21,190.69 = 8,642.27/x
  3. Step 3: Cross multiply
    15,356.76x = 21,190.69 × 8,642.27
  4. Step 4: Simplify right side
    15,356.76x = 183,135,664.47
  5. Step 5: Solve for x
    x = 183,135,664.47/15,356.76
  6. Step 6: Final answer
    x = 11,925.41

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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.