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Finding the Fourth Proportional to 15,898.64, 21,941.14 and 9,184.55

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Solution

The fourth proportional to 15,898.64, 21,941.14 and 9,184.55 is: 12,675.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,898.64 : 21,941.14 = 9,184.55 : x
  2. Step 2: Convert to fraction form
    15,898.64/21,941.14 = 9,184.55/x
  3. Step 3: Cross multiply
    15,898.64x = 21,941.14 × 9,184.55
  4. Step 4: Simplify right side
    15,898.64x = 201,519,364.72
  5. Step 5: Solve for x
    x = 201,519,364.72/15,898.64
  6. Step 6: Final answer
    x = 12,675.26

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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.