Home / 22,501.36-31,022.76-15,415.12

Finding the Fourth Proportional to 22,501.36, 31,022.76 and 15,415.12

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Solution

The fourth proportional to 22,501.36, 31,022.76 and 15,415.12 is: 21,252.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,501.36 : 31,022.76 = 15,415.12 : x
  2. Step 2: Convert to fraction form
    22,501.36/31,022.76 = 15,415.12/x
  3. Step 3: Cross multiply
    22,501.36x = 31,022.76 × 15,415.12
  4. Step 4: Simplify right side
    22,501.36x = 478,219,568.13
  5. Step 5: Solve for x
    x = 478,219,568.13/22,501.36
  6. Step 6: Final answer
    x = 21,252.92

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Half 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.