Home / 12,124.61-16,722.45-8,298.51

Finding the Fourth Proportional to 12,124.61, 16,722.45 and 8,298.51

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Solution

The fourth proportional to 12,124.61, 16,722.45 and 8,298.51 is: 11,445.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,124.61 : 16,722.45 = 8,298.51 : x
  2. Step 2: Convert to fraction form
    12,124.61/16,722.45 = 8,298.51/x
  3. Step 3: Cross multiply
    12,124.61x = 16,722.45 × 8,298.51
  4. Step 4: Simplify right side
    12,124.61x = 138,771,418.55
  5. Step 5: Solve for x
    x = 138,771,418.55/12,124.61
  6. Step 6: Final answer
    x = 11,445.44

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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.