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Finding the Fourth Proportional to 28,051.61, 42,041.04 and 11,392.13

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Solution

The fourth proportional to 28,051.61, 42,041.04 and 11,392.13 is: 17,073.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,051.61 : 42,041.04 = 11,392.13 : x
  2. Step 2: Convert to fraction form
    28,051.61/42,041.04 = 11,392.13/x
  3. Step 3: Cross multiply
    28,051.61x = 42,041.04 × 11,392.13
  4. Step 4: Simplify right side
    28,051.61x = 478,936,782.81
  5. Step 5: Solve for x
    x = 478,936,782.81/28,051.61
  6. Step 6: Final answer
    x = 17,073.42

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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.