Home / 28,543.69-42,815.81-12,749.52

Finding the Fourth Proportional to 28,543.69, 42,815.81 and 12,749.52

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Solution

The fourth proportional to 28,543.69, 42,815.81 and 12,749.52 is: 19,124.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543.69 : 42,815.81 = 12,749.52 : x
  2. Step 2: Convert to fraction form
    28,543.69/42,815.81 = 12,749.52/x
  3. Step 3: Cross multiply
    28,543.69x = 42,815.81 × 12,749.52
  4. Step 4: Simplify right side
    28,543.69x = 545,881,025.91
  5. Step 5: Solve for x
    x = 545,881,025.91/28,543.69
  6. Step 6: Final answer
    x = 19,124.40

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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.