Home / 21,803.64-30,085.41-12,849.93

Finding the Fourth Proportional to 21,803.64, 30,085.41 and 12,849.93

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Solution

The fourth proportional to 21,803.64, 30,085.41 and 12,849.93 is: 17,730.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,803.64 : 30,085.41 = 12,849.93 : x
  2. Step 2: Convert to fraction form
    21,803.64/30,085.41 = 12,849.93/x
  3. Step 3: Cross multiply
    21,803.64x = 30,085.41 × 12,849.93
  4. Step 4: Simplify right side
    21,803.64x = 386,595,412.52
  5. Step 5: Solve for x
    x = 386,595,412.52/21,803.64
  6. Step 6: Final answer
    x = 17,730.77

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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.