Home / 21,753.79-30,018.19-12,322.35

Finding the Fourth Proportional to 21,753.79, 30,018.19 and 12,322.35

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Solution

The fourth proportional to 21,753.79, 30,018.19 and 12,322.35 is: 17,003.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,753.79 : 30,018.19 = 12,322.35 : x
  2. Step 2: Convert to fraction form
    21,753.79/30,018.19 = 12,322.35/x
  3. Step 3: Cross multiply
    21,753.79x = 30,018.19 × 12,322.35
  4. Step 4: Simplify right side
    21,753.79x = 369,894,643.55
  5. Step 5: Solve for x
    x = 369,894,643.55/21,753.79
  6. Step 6: Final answer
    x = 17,003.69

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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.