Home / 21,331.59-29,437.74-12,384.42

Finding the Fourth Proportional to 21,331.59, 29,437.74 and 12,384.42

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Solution

The fourth proportional to 21,331.59, 29,437.74 and 12,384.42 is: 17,090.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,331.59 : 29,437.74 = 12,384.42 : x
  2. Step 2: Convert to fraction form
    21,331.59/29,437.74 = 12,384.42/x
  3. Step 3: Cross multiply
    21,331.59x = 29,437.74 × 12,384.42
  4. Step 4: Simplify right side
    21,331.59x = 364,569,336.01
  5. Step 5: Solve for x
    x = 364,569,336.01/21,331.59
  6. Step 6: Final answer
    x = 17,090.58

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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.