Home / 21,336.32-29,437.08-13,787.10

Finding the Fourth Proportional to 21,336.32, 29,437.08 and 13,787.10

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Solution

The fourth proportional to 21,336.32, 29,437.08 and 13,787.10 is: 19,021.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,336.32 : 29,437.08 = 13,787.10 : x
  2. Step 2: Convert to fraction form
    21,336.32/29,437.08 = 13,787.10/x
  3. Step 3: Cross multiply
    21,336.32x = 29,437.08 × 13,787.10
  4. Step 4: Simplify right side
    21,336.32x = 405,851,965.67
  5. Step 5: Solve for x
    x = 405,851,965.67/21,336.32
  6. Step 6: Final answer
    x = 19,021.65

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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.