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Finding the Fourth Proportional to 28,501.86, 42,755.20 and 7,444.68

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Solution

The fourth proportional to 28,501.86, 42,755.20 and 7,444.68 is: 11,167.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,501.86 : 42,755.20 = 7,444.68 : x
  2. Step 2: Convert to fraction form
    28,501.86/42,755.20 = 7,444.68/x
  3. Step 3: Cross multiply
    28,501.86x = 42,755.20 × 7,444.68
  4. Step 4: Simplify right side
    28,501.86x = 318,298,782.34
  5. Step 5: Solve for x
    x = 318,298,782.34/28,501.86
  6. Step 6: Final answer
    x = 11,167.65

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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.