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Finding the Fourth Proportional to 15,693.62, 21,657.11 and 8,523.47

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Solution

The fourth proportional to 15,693.62, 21,657.11 and 8,523.47 is: 11,762.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,693.62 : 21,657.11 = 8,523.47 : x
  2. Step 2: Convert to fraction form
    15,693.62/21,657.11 = 8,523.47/x
  3. Step 3: Cross multiply
    15,693.62x = 21,657.11 × 8,523.47
  4. Step 4: Simplify right side
    15,693.62x = 184,593,802.82
  5. Step 5: Solve for x
    x = 184,593,802.82/15,693.62
  6. Step 6: Final answer
    x = 11,762.35

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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.