Home / 21,358.08-29,479.14-13,807.26

Finding the Fourth Proportional to 21,358.08, 29,479.14 and 13,807.26

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Solution

The fourth proportional to 21,358.08, 29,479.14 and 13,807.26 is: 19,057.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,358.08 : 29,479.14 = 13,807.26 : x
  2. Step 2: Convert to fraction form
    21,358.08/29,479.14 = 13,807.26/x
  3. Step 3: Cross multiply
    21,358.08x = 29,479.14 × 13,807.26
  4. Step 4: Simplify right side
    21,358.08x = 407,026,150.56
  5. Step 5: Solve for x
    x = 407,026,150.56/21,358.08
  6. Step 6: Final answer
    x = 19,057.24

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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.