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Finding the Fourth Proportional to 18,404.93, 25,368.47 and 13,020.41

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Solution

The fourth proportional to 18,404.93, 25,368.47 and 13,020.41 is: 17,946.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,404.93 : 25,368.47 = 13,020.41 : x
  2. Step 2: Convert to fraction form
    18,404.93/25,368.47 = 13,020.41/x
  3. Step 3: Cross multiply
    18,404.93x = 25,368.47 × 13,020.41
  4. Step 4: Simplify right side
    18,404.93x = 330,307,881.31
  5. Step 5: Solve for x
    x = 330,307,881.31/18,404.93
  6. Step 6: Final answer
    x = 17,946.71

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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.