Home / 21,363.47-29,439.93-15,383.84

Finding the Fourth Proportional to 21,363.47, 29,439.93 and 15,383.84

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Solution

The fourth proportional to 21,363.47, 29,439.93 and 15,383.84 is: 21,199.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,363.47 : 29,439.93 = 15,383.84 : x
  2. Step 2: Convert to fraction form
    21,363.47/29,439.93 = 15,383.84/x
  3. Step 3: Cross multiply
    21,363.47x = 29,439.93 × 15,383.84
  4. Step 4: Simplify right side
    21,363.47x = 452,899,025.53
  5. Step 5: Solve for x
    x = 452,899,025.53/21,363.47
  6. Step 6: Final answer
    x = 21,199.70

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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.