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Finding the Fourth Proportional to 14,368.67, 19,828.40 and 8,318.07

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Solution

The fourth proportional to 14,368.67, 19,828.40 and 8,318.07 is: 11,478.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,368.67 : 19,828.40 = 8,318.07 : x
  2. Step 2: Convert to fraction form
    14,368.67/19,828.40 = 8,318.07/x
  3. Step 3: Cross multiply
    14,368.67x = 19,828.40 × 8,318.07
  4. Step 4: Simplify right side
    14,368.67x = 164,934,019.19
  5. Step 5: Solve for x
    x = 164,934,019.19/14,368.67
  6. Step 6: Final answer
    x = 11,478.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.