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Finding the Fourth Proportional to 28,573.34, 42,864.56 and 9,858.08

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Solution

The fourth proportional to 28,573.34, 42,864.56 and 9,858.08 is: 14,788.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,573.34 : 42,864.56 = 9,858.08 : x
  2. Step 2: Convert to fraction form
    28,573.34/42,864.56 = 9,858.08/x
  3. Step 3: Cross multiply
    28,573.34x = 42,864.56 × 9,858.08
  4. Step 4: Simplify right side
    28,573.34x = 422,562,261.64
  5. Step 5: Solve for x
    x = 422,562,261.64/28,573.34
  6. Step 6: Final answer
    x = 14,788.69

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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.