Home / 21,658.19-29,885.15-12,703.64

Finding the Fourth Proportional to 21,658.19, 29,885.15 and 12,703.64

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Solution

The fourth proportional to 21,658.19, 29,885.15 and 12,703.64 is: 17,529.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,658.19 : 29,885.15 = 12,703.64 : x
  2. Step 2: Convert to fraction form
    21,658.19/29,885.15 = 12,703.64/x
  3. Step 3: Cross multiply
    21,658.19x = 29,885.15 × 12,703.64
  4. Step 4: Simplify right side
    21,658.19x = 379,650,069.28
  5. Step 5: Solve for x
    x = 379,650,069.28/21,658.19
  6. Step 6: Final answer
    x = 17,529.17

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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.