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Finding the Fourth Proportional to 28,848.60, 43,272.90 and 9,133.20

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Solution

The fourth proportional to 28,848.60, 43,272.90 and 9,133.20 is: 13,699.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,848.60 : 43,272.90 = 9,133.20 : x
  2. Step 2: Convert to fraction form
    28,848.60/43,272.90 = 9,133.20/x
  3. Step 3: Cross multiply
    28,848.60x = 43,272.90 × 9,133.20
  4. Step 4: Simplify right side
    28,848.60x = 395,220,050.28
  5. Step 5: Solve for x
    x = 395,220,050.28/28,848.60
  6. Step 6: Final answer
    x = 13,699.80

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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.