Home / 15,407.79-21,262.73-8,334.21

Finding the Fourth Proportional to 15,407.79, 21,262.73 and 8,334.21

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Solution

The fourth proportional to 15,407.79, 21,262.73 and 8,334.21 is: 11,501.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,407.79 : 21,262.73 = 8,334.21 : x
  2. Step 2: Convert to fraction form
    15,407.79/21,262.73 = 8,334.21/x
  3. Step 3: Cross multiply
    15,407.79x = 21,262.73 × 8,334.21
  4. Step 4: Simplify right side
    15,407.79x = 177,208,056.99
  5. Step 5: Solve for x
    x = 177,208,056.99/15,407.79
  6. Step 6: Final answer
    x = 11,501.20

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Half scale
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Double scale
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Similar ratio
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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.