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Finding the Fourth Proportional to 28,564.34, 42,848.51 and 8,840.30

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Solution

The fourth proportional to 28,564.34, 42,848.51 and 8,840.30 is: 13,261.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,564.34 : 42,848.51 = 8,840.30 : x
  2. Step 2: Convert to fraction form
    28,564.34/42,848.51 = 8,840.30/x
  3. Step 3: Cross multiply
    28,564.34x = 42,848.51 × 8,840.30
  4. Step 4: Simplify right side
    28,564.34x = 378,793,682.95
  5. Step 5: Solve for x
    x = 378,793,682.95/28,564.34
  6. Step 6: Final answer
    x = 13,261.07

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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.