Home / 14,128.88-19,495.28-8,158.40

Finding the Fourth Proportional to 14,128.88, 19,495.28 and 8,158.40

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Solution

The fourth proportional to 14,128.88, 19,495.28 and 8,158.40 is: 11,257.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,128.88 : 19,495.28 = 8,158.40 : x
  2. Step 2: Convert to fraction form
    14,128.88/19,495.28 = 8,158.40/x
  3. Step 3: Cross multiply
    14,128.88x = 19,495.28 × 8,158.40
  4. Step 4: Simplify right side
    14,128.88x = 159,050,292.35
  5. Step 5: Solve for x
    x = 159,050,292.35/14,128.88
  6. Step 6: Final answer
    x = 11,257.11

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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.