Home / 14,143.47-19,521.49-8,178.59

Finding the Fourth Proportional to 14,143.47, 19,521.49 and 8,178.59

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Solution

The fourth proportional to 14,143.47, 19,521.49 and 8,178.59 is: 11,288.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,143.47 : 19,521.49 = 8,178.59 : x
  2. Step 2: Convert to fraction form
    14,143.47/19,521.49 = 8,178.59/x
  3. Step 3: Cross multiply
    14,143.47x = 19,521.49 × 8,178.59
  4. Step 4: Simplify right side
    14,143.47x = 159,658,366.77
  5. Step 5: Solve for x
    x = 159,658,366.77/14,143.47
  6. Step 6: Final answer
    x = 11,288.49

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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.