Home / 21,340.08-29,442.15-12,384.36

Finding the Fourth Proportional to 21,340.08, 29,442.15 and 12,384.36

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Solution

The fourth proportional to 21,340.08, 29,442.15 and 12,384.36 is: 17,086.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,340.08 : 29,442.15 = 12,384.36 : x
  2. Step 2: Convert to fraction form
    21,340.08/29,442.15 = 12,384.36/x
  3. Step 3: Cross multiply
    21,340.08x = 29,442.15 × 12,384.36
  4. Step 4: Simplify right side
    21,340.08x = 364,622,184.77
  5. Step 5: Solve for x
    x = 364,622,184.77/21,340.08
  6. Step 6: Final answer
    x = 17,086.26

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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.