Home / 21,336.12-29,430.54-15,358.32

Finding the Fourth Proportional to 21,336.12, 29,430.54 and 15,358.32

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Solution

The fourth proportional to 21,336.12, 29,430.54 and 15,358.32 is: 21,184.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,336.12 : 29,430.54 = 15,358.32 : x
  2. Step 2: Convert to fraction form
    21,336.12/29,430.54 = 15,358.32/x
  3. Step 3: Cross multiply
    21,336.12x = 29,430.54 × 15,358.32
  4. Step 4: Simplify right side
    21,336.12x = 452,003,651.09
  5. Step 5: Solve for x
    x = 452,003,651.09/21,336.12
  6. Step 6: Final answer
    x = 21,184.90

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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.