Home / 14,124.20-21,178.30-5,359.40

Finding the Fourth Proportional to 14,124.20, 21,178.30 and 5,359.40

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Solution

The fourth proportional to 14,124.20, 21,178.30 and 5,359.40 is: 8,036.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,124.20 : 21,178.30 = 5,359.40 : x
  2. Step 2: Convert to fraction form
    14,124.20/21,178.30 = 5,359.40/x
  3. Step 3: Cross multiply
    14,124.20x = 21,178.30 × 5,359.40
  4. Step 4: Simplify right side
    14,124.20x = 113,502,981.02
  5. Step 5: Solve for x
    x = 113,502,981.02/14,124.20
  6. Step 6: Final answer
    x = 8,036.06

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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.