Home / 20,316.61-30,486.53-10,956.57

Finding the Fourth Proportional to 20,316.61, 30,486.53 and 10,956.57

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Solution

The fourth proportional to 20,316.61, 30,486.53 and 10,956.57 is: 16,441.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,316.61 : 30,486.53 = 10,956.57 : x
  2. Step 2: Convert to fraction form
    20,316.61/30,486.53 = 10,956.57/x
  3. Step 3: Cross multiply
    20,316.61x = 30,486.53 × 10,956.57
  4. Step 4: Simplify right side
    20,316.61x = 334,027,592.79
  5. Step 5: Solve for x
    x = 334,027,592.79/20,316.61
  6. Step 6: Final answer
    x = 16,441.11

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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.