Home / 28,530.72-42,798.51-7,470.68

Finding the Fourth Proportional to 28,530.72, 42,798.51 and 7,470.68

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Solution

The fourth proportional to 28,530.72, 42,798.51 and 7,470.68 is: 11,206.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,530.72 : 42,798.51 = 7,470.68 : x
  2. Step 2: Convert to fraction form
    28,530.72/42,798.51 = 7,470.68/x
  3. Step 3: Cross multiply
    28,530.72x = 42,798.51 × 7,470.68
  4. Step 4: Simplify right side
    28,530.72x = 319,733,758.69
  5. Step 5: Solve for x
    x = 319,733,758.69/28,530.72
  6. Step 6: Final answer
    x = 11,206.65

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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.