Home / 21,455.84-29,603.50-12,951.24

Finding the Fourth Proportional to 21,455.84, 29,603.50 and 12,951.24

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Solution

The fourth proportional to 21,455.84, 29,603.50 and 12,951.24 is: 17,869.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,455.84 : 29,603.50 = 12,951.24 : x
  2. Step 2: Convert to fraction form
    21,455.84/29,603.50 = 12,951.24/x
  3. Step 3: Cross multiply
    21,455.84x = 29,603.50 × 12,951.24
  4. Step 4: Simplify right side
    21,455.84x = 383,402,033.34
  5. Step 5: Solve for x
    x = 383,402,033.34/21,455.84
  6. Step 6: Final answer
    x = 17,869.36

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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.