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Finding the Fourth Proportional to 10,688.79, 14,754.69 and 9,567.79

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Solution

The fourth proportional to 10,688.79, 14,754.69 and 9,567.79 is: 13,207.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,688.79 : 14,754.69 = 9,567.79 : x
  2. Step 2: Convert to fraction form
    10,688.79/14,754.69 = 9,567.79/x
  3. Step 3: Cross multiply
    10,688.79x = 14,754.69 × 9,567.79
  4. Step 4: Simplify right side
    10,688.79x = 141,169,738.55
  5. Step 5: Solve for x
    x = 141,169,738.55/10,688.79
  6. Step 6: Final answer
    x = 13,207.27

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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.