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Finding the Fourth Proportional to 14,859.48, 20,502 and 9,191.51

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Solution

The fourth proportional to 14,859.48, 20,502 and 9,191.51 is: 12,681.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,859.48 : 20,502 = 9,191.51 : x
  2. Step 2: Convert to fraction form
    14,859.48/20,502 = 9,191.51/x
  3. Step 3: Cross multiply
    14,859.48x = 20,502 × 9,191.51
  4. Step 4: Simplify right side
    14,859.48x = 188,444,235.51
  5. Step 5: Solve for x
    x = 188,444,235.51/14,859.48
  6. Step 6: Final answer
    x = 12,681.75

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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.