Home / 21,154.52-29,192.23-12,661.32

Finding the Fourth Proportional to 21,154.52, 29,192.23 and 12,661.32

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Solution

The fourth proportional to 21,154.52, 29,192.23 and 12,661.32 is: 17,472.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,154.52 : 29,192.23 = 12,661.32 : x
  2. Step 2: Convert to fraction form
    21,154.52/29,192.23 = 12,661.32/x
  3. Step 3: Cross multiply
    21,154.52x = 29,192.23 × 12,661.32
  4. Step 4: Simplify right side
    21,154.52x = 369,611,956.28
  5. Step 5: Solve for x
    x = 369,611,956.28/21,154.52
  6. Step 6: Final answer
    x = 17,472.01

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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.