Home / 21,347.17-29,465.35-12,398.69

Finding the Fourth Proportional to 21,347.17, 29,465.35 and 12,398.69

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Solution

The fourth proportional to 21,347.17, 29,465.35 and 12,398.69 is: 17,113.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,347.17 : 29,465.35 = 12,398.69 : x
  2. Step 2: Convert to fraction form
    21,347.17/29,465.35 = 12,398.69/x
  3. Step 3: Cross multiply
    21,347.17x = 29,465.35 × 12,398.69
  4. Step 4: Simplify right side
    21,347.17x = 365,331,783.06
  5. Step 5: Solve for x
    x = 365,331,783.06/21,347.17
  6. Step 6: Final answer
    x = 17,113.83

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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.