Home / 14,857.70-20,503.73-8,143.91

Finding the Fourth Proportional to 14,857.70, 20,503.73 and 8,143.91

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Solution

The fourth proportional to 14,857.70, 20,503.73 and 8,143.91 is: 11,238.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,857.70 : 20,503.73 = 8,143.91 : x
  2. Step 2: Convert to fraction form
    14,857.70/20,503.73 = 8,143.91/x
  3. Step 3: Cross multiply
    14,857.70x = 20,503.73 × 8,143.91
  4. Step 4: Simplify right side
    14,857.70x = 166,980,526.51
  5. Step 5: Solve for x
    x = 166,980,526.51/14,857.70
  6. Step 6: Final answer
    x = 11,238.66

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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.