Home / 21,402.32-29,528.52-13,015.76

Finding the Fourth Proportional to 21,402.32, 29,528.52 and 13,015.76

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Solution

The fourth proportional to 21,402.32, 29,528.52 and 13,015.76 is: 17,957.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,402.32 : 29,528.52 = 13,015.76 : x
  2. Step 2: Convert to fraction form
    21,402.32/29,528.52 = 13,015.76/x
  3. Step 3: Cross multiply
    21,402.32x = 29,528.52 × 13,015.76
  4. Step 4: Simplify right side
    21,402.32x = 384,336,129.48
  5. Step 5: Solve for x
    x = 384,336,129.48/21,402.32
  6. Step 6: Final answer
    x = 17,957.69

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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.