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Finding the Fourth Proportional to 28,029.71, 42,037.40 and 8,303.65

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Solution

The fourth proportional to 28,029.71, 42,037.40 and 8,303.65 is: 12,453.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,029.71 : 42,037.40 = 8,303.65 : x
  2. Step 2: Convert to fraction form
    28,029.71/42,037.40 = 8,303.65/x
  3. Step 3: Cross multiply
    28,029.71x = 42,037.40 × 8,303.65
  4. Step 4: Simplify right side
    28,029.71x = 349,063,856.51
  5. Step 5: Solve for x
    x = 349,063,856.51/28,029.71
  6. Step 6: Final answer
    x = 12,453.35

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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.