Home / 15,374.22-21,212.77-8,658.51

Finding the Fourth Proportional to 15,374.22, 21,212.77 and 8,658.51

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Solution

The fourth proportional to 15,374.22, 21,212.77 and 8,658.51 is: 11,946.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,374.22 : 21,212.77 = 8,658.51 : x
  2. Step 2: Convert to fraction form
    15,374.22/21,212.77 = 8,658.51/x
  3. Step 3: Cross multiply
    15,374.22x = 21,212.77 × 8,658.51
  4. Step 4: Simplify right side
    15,374.22x = 183,670,981.17
  5. Step 5: Solve for x
    x = 183,670,981.17/15,374.22
  6. Step 6: Final answer
    x = 11,946.69

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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.