Home / 15,501.48-21,391.88-8,427.76

Finding the Fourth Proportional to 15,501.48, 21,391.88 and 8,427.76

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Solution

The fourth proportional to 15,501.48, 21,391.88 and 8,427.76 is: 11,630.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,501.48 : 21,391.88 = 8,427.76 : x
  2. Step 2: Convert to fraction form
    15,501.48/21,391.88 = 8,427.76/x
  3. Step 3: Cross multiply
    15,501.48x = 21,391.88 × 8,427.76
  4. Step 4: Simplify right side
    15,501.48x = 180,285,630.59
  5. Step 5: Solve for x
    x = 180,285,630.59/15,501.48
  6. Step 6: Final answer
    x = 11,630.22

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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.