Home / 21,084.24-29,099.34-12,700.56

Finding the Fourth Proportional to 21,084.24, 29,099.34 and 12,700.56

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Solution

The fourth proportional to 21,084.24, 29,099.34 and 12,700.56 is: 17,528.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,084.24 : 29,099.34 = 12,700.56 : x
  2. Step 2: Convert to fraction form
    21,084.24/29,099.34 = 12,700.56/x
  3. Step 3: Cross multiply
    21,084.24x = 29,099.34 × 12,700.56
  4. Step 4: Simplify right side
    21,084.24x = 369,577,913.63
  5. Step 5: Solve for x
    x = 369,577,913.63/21,084.24
  6. Step 6: Final answer
    x = 17,528.63

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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.