Home / 20,140.24-27,803.63-12,590.77

Finding the Fourth Proportional to 20,140.24, 27,803.63 and 12,590.77

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Solution

The fourth proportional to 20,140.24, 27,803.63 and 12,590.77 is: 17,381.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,140.24 : 27,803.63 = 12,590.77 : x
  2. Step 2: Convert to fraction form
    20,140.24/27,803.63 = 12,590.77/x
  3. Step 3: Cross multiply
    20,140.24x = 27,803.63 × 12,590.77
  4. Step 4: Simplify right side
    20,140.24x = 350,069,110.50
  5. Step 5: Solve for x
    x = 350,069,110.50/20,140.24
  6. Step 6: Final answer
    x = 17,381.58

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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.