Home / 14,139.93-21,178.71-8,857.74

Finding the Fourth Proportional to 14,139.93, 21,178.71 and 8,857.74

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Solution

The fourth proportional to 14,139.93, 21,178.71 and 8,857.74 is: 13,267.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,139.93 : 21,178.71 = 8,857.74 : x
  2. Step 2: Convert to fraction form
    14,139.93/21,178.71 = 8,857.74/x
  3. Step 3: Cross multiply
    14,139.93x = 21,178.71 × 8,857.74
  4. Step 4: Simplify right side
    14,139.93x = 187,595,506.72
  5. Step 5: Solve for x
    x = 187,595,506.72/14,139.93
  6. Step 6: Final answer
    x = 13,267.07

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1.5x scale

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.