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Finding the Fourth Proportional to 28,026.70, 42,032.86 and 8,300.63

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Solution

The fourth proportional to 28,026.70, 42,032.86 and 8,300.63 is: 12,448.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,026.70 : 42,032.86 = 8,300.63 : x
  2. Step 2: Convert to fraction form
    28,026.70/42,032.86 = 8,300.63/x
  3. Step 3: Cross multiply
    28,026.70x = 42,032.86 × 8,300.63
  4. Step 4: Simplify right side
    28,026.70x = 348,899,303.03
  5. Step 5: Solve for x
    x = 348,899,303.03/28,026.70
  6. Step 6: Final answer
    x = 12,448.82

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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.