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Finding the Fourth Proportional to 37,690.56, 56,539.68 and 9,988.56

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Solution

The fourth proportional to 37,690.56, 56,539.68 and 9,988.56 is: 14,983.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,690.56 : 56,539.68 = 9,988.56 : x
  2. Step 2: Convert to fraction form
    37,690.56/56,539.68 = 9,988.56/x
  3. Step 3: Cross multiply
    37,690.56x = 56,539.68 × 9,988.56
  4. Step 4: Simplify right side
    37,690.56x = 564,749,986.06
  5. Step 5: Solve for x
    x = 564,749,986.06/37,690.56
  6. Step 6: Final answer
    x = 14,983.86

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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.