Home / 28,543.15-42,815.01-12,749.00

Finding the Fourth Proportional to 28,543.15, 42,815.01 and 12,749.00

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Solution

The fourth proportional to 28,543.15, 42,815.01 and 12,749.00 is: 19,123.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543.15 : 42,815.01 = 12,749.00 : x
  2. Step 2: Convert to fraction form
    28,543.15/42,815.01 = 12,749.00/x
  3. Step 3: Cross multiply
    28,543.15x = 42,815.01 × 12,749.00
  4. Step 4: Simplify right side
    28,543.15x = 545,848,396.22
  5. Step 5: Solve for x
    x = 545,848,396.22/28,543.15
  6. Step 6: Final answer
    x = 19,123.62

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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.