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Finding the Fourth Proportional to 21,477.52, 32,203.05 and 7,434.28

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Solution

The fourth proportional to 21,477.52, 32,203.05 and 7,434.28 is: 11,146.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,477.52 : 32,203.05 = 7,434.28 : x
  2. Step 2: Convert to fraction form
    21,477.52/32,203.05 = 7,434.28/x
  3. Step 3: Cross multiply
    21,477.52x = 32,203.05 × 7,434.28
  4. Step 4: Simplify right side
    21,477.52x = 239,406,490.55
  5. Step 5: Solve for x
    x = 239,406,490.55/21,477.52
  6. Step 6: Final answer
    x = 11,146.84

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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.