Home / 15,693.98-21,652.40-8,887.07

Finding the Fourth Proportional to 15,693.98, 21,652.40 and 8,887.07

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Solution

The fourth proportional to 15,693.98, 21,652.40 and 8,887.07 is: 12,261.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,693.98 : 21,652.40 = 8,887.07 : x
  2. Step 2: Convert to fraction form
    15,693.98/21,652.40 = 8,887.07/x
  3. Step 3: Cross multiply
    15,693.98x = 21,652.40 × 8,887.07
  4. Step 4: Simplify right side
    15,693.98x = 192,426,286.21
  5. Step 5: Solve for x
    x = 192,426,286.21/15,693.98
  6. Step 6: Final answer
    x = 12,261.16

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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.