Home / 15,433.41-21,298-8,718.72

Finding the Fourth Proportional to 15,433.41, 21,298 and 8,718.72

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Solution

The fourth proportional to 15,433.41, 21,298 and 8,718.72 is: 12,031.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,433.41 : 21,298 = 8,718.72 : x
  2. Step 2: Convert to fraction form
    15,433.41/21,298 = 8,718.72/x
  3. Step 3: Cross multiply
    15,433.41x = 21,298 × 8,718.72
  4. Step 4: Simplify right side
    15,433.41x = 185,691,298.56
  5. Step 5: Solve for x
    x = 185,691,298.56/15,433.41
  6. Step 6: Final answer
    x = 12,031.77

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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.