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Finding the Fourth Proportional to 28,021.48, 42,032.22 and 9,553

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Solution

The fourth proportional to 28,021.48, 42,032.22 and 9,553 is: 14,329.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,021.48 : 42,032.22 = 9,553 : x
  2. Step 2: Convert to fraction form
    28,021.48/42,032.22 = 9,553/x
  3. Step 3: Cross multiply
    28,021.48x = 42,032.22 × 9,553
  4. Step 4: Simplify right side
    28,021.48x = 401,533,797.66
  5. Step 5: Solve for x
    x = 401,533,797.66/28,021.48
  6. Step 6: Final answer
    x = 14,329.50

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.