Home / 15,461.01-21,336.26-8,387.55

Finding the Fourth Proportional to 15,461.01, 21,336.26 and 8,387.55

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Solution

The fourth proportional to 15,461.01, 21,336.26 and 8,387.55 is: 11,574.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,461.01 : 21,336.26 = 8,387.55 : x
  2. Step 2: Convert to fraction form
    15,461.01/21,336.26 = 8,387.55/x
  3. Step 3: Cross multiply
    15,461.01x = 21,336.26 × 8,387.55
  4. Step 4: Simplify right side
    15,461.01x = 178,958,905.63
  5. Step 5: Solve for x
    x = 178,958,905.63/15,461.01
  6. Step 6: Final answer
    x = 11,574.85

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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.