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Finding the Fourth Proportional to 13,008.88, 19,509.54 and 7,461.28

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Solution

The fourth proportional to 13,008.88, 19,509.54 and 7,461.28 is: 11,189.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,008.88 : 19,509.54 = 7,461.28 : x
  2. Step 2: Convert to fraction form
    13,008.88/19,509.54 = 7,461.28/x
  3. Step 3: Cross multiply
    13,008.88x = 19,509.54 × 7,461.28
  4. Step 4: Simplify right side
    13,008.88x = 145,566,140.61
  5. Step 5: Solve for x
    x = 145,566,140.61/13,008.88
  6. Step 6: Final answer
    x = 11,189.75

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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.