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Finding the Fourth Proportional to 12,701.10, 19,051.65 and 9,785.10

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Solution

The fourth proportional to 12,701.10, 19,051.65 and 9,785.10 is: 14,677.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,701.10 : 19,051.65 = 9,785.10 : x
  2. Step 2: Convert to fraction form
    12,701.10/19,051.65 = 9,785.10/x
  3. Step 3: Cross multiply
    12,701.10x = 19,051.65 × 9,785.10
  4. Step 4: Simplify right side
    12,701.10x = 186,422,300.42
  5. Step 5: Solve for x
    x = 186,422,300.42/12,701.10
  6. Step 6: Final answer
    x = 14,677.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.