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Finding the Fourth Proportional to 30,656.88, 45,988.90 and 10,938.24

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Solution

The fourth proportional to 30,656.88, 45,988.90 and 10,938.24 is: 16,408.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,656.88 : 45,988.90 = 10,938.24 : x
  2. Step 2: Convert to fraction form
    30,656.88/45,988.90 = 10,938.24/x
  3. Step 3: Cross multiply
    30,656.88x = 45,988.90 × 10,938.24
  4. Step 4: Simplify right side
    30,656.88x = 503,037,625.54
  5. Step 5: Solve for x
    x = 503,037,625.54/30,656.88
  6. Step 6: Final answer
    x = 16,408.64

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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.