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Finding the Fourth Proportional to 19,810.30, 29,704.71 and 8,703.98

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Solution

The fourth proportional to 19,810.30, 29,704.71 and 8,703.98 is: 13,051.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,810.30 : 29,704.71 = 8,703.98 : x
  2. Step 2: Convert to fraction form
    19,810.30/29,704.71 = 8,703.98/x
  3. Step 3: Cross multiply
    19,810.30x = 29,704.71 × 8,703.98
  4. Step 4: Simplify right side
    19,810.30x = 258,549,201.75
  5. Step 5: Solve for x
    x = 258,549,201.75/19,810.30
  6. Step 6: Final answer
    x = 13,051.25

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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.