Home / 14,310.85-21,478.62-9,931.38

Finding the Fourth Proportional to 14,310.85, 21,478.62 and 9,931.38

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Solution

The fourth proportional to 14,310.85, 21,478.62 and 9,931.38 is: 14,905.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,310.85 : 21,478.62 = 9,931.38 : x
  2. Step 2: Convert to fraction form
    14,310.85/21,478.62 = 9,931.38/x
  3. Step 3: Cross multiply
    14,310.85x = 21,478.62 × 9,931.38
  4. Step 4: Simplify right side
    14,310.85x = 213,312,374.34
  5. Step 5: Solve for x
    x = 213,312,374.34/14,310.85
  6. Step 6: Final answer
    x = 14,905.64

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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.