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Finding the Fourth Proportional to 14,162.58, 21,246.71 and 7,931.45

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Solution

The fourth proportional to 14,162.58, 21,246.71 and 7,931.45 is: 11,898.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,162.58 : 21,246.71 = 7,931.45 : x
  2. Step 2: Convert to fraction form
    14,162.58/21,246.71 = 7,931.45/x
  3. Step 3: Cross multiply
    14,162.58x = 21,246.71 × 7,931.45
  4. Step 4: Simplify right side
    14,162.58x = 168,517,231.49
  5. Step 5: Solve for x
    x = 168,517,231.49/14,162.58
  6. Step 6: Final answer
    x = 11,898.77

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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.