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Finding the Fourth Proportional to 13,239.16, 19,866.94 and 7,695.11

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Solution

The fourth proportional to 13,239.16, 19,866.94 and 7,695.11 is: 11,547.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.16 : 19,866.94 = 7,695.11 : x
  2. Step 2: Convert to fraction form
    13,239.16/19,866.94 = 7,695.11/x
  3. Step 3: Cross multiply
    13,239.16x = 19,866.94 × 7,695.11
  4. Step 4: Simplify right side
    13,239.16x = 152,878,288.66
  5. Step 5: Solve for x
    x = 152,878,288.66/13,239.16
  6. Step 6: Final answer
    x = 11,547.43

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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.