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Finding the Fourth Proportional to 30,647.70, 45,971.55 and 10,926.90

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Solution

The fourth proportional to 30,647.70, 45,971.55 and 10,926.90 is: 16,390.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,647.70 : 45,971.55 = 10,926.90 : x
  2. Step 2: Convert to fraction form
    30,647.70/45,971.55 = 10,926.90/x
  3. Step 3: Cross multiply
    30,647.70x = 45,971.55 × 10,926.90
  4. Step 4: Simplify right side
    30,647.70x = 502,326,529.70
  5. Step 5: Solve for x
    x = 502,326,529.70/30,647.70
  6. Step 6: Final answer
    x = 16,390.35

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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.