Home / 15,693.48-21,657.17-8,619.75

Finding the Fourth Proportional to 15,693.48, 21,657.17 and 8,619.75

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Solution

The fourth proportional to 15,693.48, 21,657.17 and 8,619.75 is: 11,895.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,693.48 : 21,657.17 = 8,619.75 : x
  2. Step 2: Convert to fraction form
    15,693.48/21,657.17 = 8,619.75/x
  3. Step 3: Cross multiply
    15,693.48x = 21,657.17 × 8,619.75
  4. Step 4: Simplify right side
    15,693.48x = 186,679,412.66
  5. Step 5: Solve for x
    x = 186,679,412.66/15,693.48
  6. Step 6: Final answer
    x = 11,895.35

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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.