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Finding the Fourth Proportional to 19,555.43, 26,986.43 and 10,602.90

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Solution

The fourth proportional to 19,555.43, 26,986.43 and 10,602.90 is: 14,631.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,555.43 : 26,986.43 = 10,602.90 : x
  2. Step 2: Convert to fraction form
    19,555.43/26,986.43 = 10,602.90/x
  3. Step 3: Cross multiply
    19,555.43x = 26,986.43 × 10,602.90
  4. Step 4: Simplify right side
    19,555.43x = 286,134,445.15
  5. Step 5: Solve for x
    x = 286,134,445.15/19,555.43
  6. Step 6: Final answer
    x = 14,631.97

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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.