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Finding the Fourth Proportional to 28,598.60, 42,903.63 and 9,879.32

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Solution

The fourth proportional to 28,598.60, 42,903.63 and 9,879.32 is: 14,820.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,598.60 : 42,903.63 = 9,879.32 : x
  2. Step 2: Convert to fraction form
    28,598.60/42,903.63 = 9,879.32/x
  3. Step 3: Cross multiply
    28,598.60x = 42,903.63 × 9,879.32
  4. Step 4: Simplify right side
    28,598.60x = 423,858,475.41
  5. Step 5: Solve for x
    x = 423,858,475.41/28,598.60
  6. Step 6: Final answer
    x = 14,820.95

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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.