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Finding the Fourth Proportional to 19,484.39, 29,239.53 and 7,172.39

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Solution

The fourth proportional to 19,484.39, 29,239.53 and 7,172.39 is: 10,763.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,484.39 : 29,239.53 = 7,172.39 : x
  2. Step 2: Convert to fraction form
    19,484.39/29,239.53 = 7,172.39/x
  3. Step 3: Cross multiply
    19,484.39x = 29,239.53 × 7,172.39
  4. Step 4: Simplify right side
    19,484.39x = 209,717,312.58
  5. Step 5: Solve for x
    x = 209,717,312.58/19,484.39
  6. Step 6: Final answer
    x = 10,763.35

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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.