Home / 14,139.90-21,209.13-4,784.40

Finding the Fourth Proportional to 14,139.90, 21,209.13 and 4,784.40

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Solution

The fourth proportional to 14,139.90, 21,209.13 and 4,784.40 is: 7,176.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,139.90 : 21,209.13 = 4,784.40 : x
  2. Step 2: Convert to fraction form
    14,139.90/21,209.13 = 4,784.40/x
  3. Step 3: Cross multiply
    14,139.90x = 21,209.13 × 4,784.40
  4. Step 4: Simplify right side
    14,139.90x = 101,472,961.57
  5. Step 5: Solve for x
    x = 101,472,961.57/14,139.90
  6. Step 6: Final answer
    x = 7,176.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.