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Finding the Fourth Proportional to 28,275.63, 42,410.71 and 14,230.08

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Solution

The fourth proportional to 28,275.63, 42,410.71 and 14,230.08 is: 21,343.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,275.63 : 42,410.71 = 14,230.08 : x
  2. Step 2: Convert to fraction form
    28,275.63/42,410.71 = 14,230.08/x
  3. Step 3: Cross multiply
    28,275.63x = 42,410.71 × 14,230.08
  4. Step 4: Simplify right side
    28,275.63x = 603,507,853.97
  5. Step 5: Solve for x
    x = 603,507,853.97/28,275.63
  6. Step 6: Final answer
    x = 21,343.74

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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.