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Finding the Fourth Proportional to 13,565.76, 18,720.54 and 7,597.63

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Solution

The fourth proportional to 13,565.76, 18,720.54 and 7,597.63 is: 10,484.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,565.76 : 18,720.54 = 7,597.63 : x
  2. Step 2: Convert to fraction form
    13,565.76/18,720.54 = 7,597.63/x
  3. Step 3: Cross multiply
    13,565.76x = 18,720.54 × 7,597.63
  4. Step 4: Simplify right side
    13,565.76x = 142,231,736.32
  5. Step 5: Solve for x
    x = 142,231,736.32/13,565.76
  6. Step 6: Final answer
    x = 10,484.61

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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.