Home / 20,705.63-28,574.57-12,326.99

Finding the Fourth Proportional to 20,705.63, 28,574.57 and 12,326.99

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Solution

The fourth proportional to 20,705.63, 28,574.57 and 12,326.99 is: 17,011.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,705.63 : 28,574.57 = 12,326.99 : x
  2. Step 2: Convert to fraction form
    20,705.63/28,574.57 = 12,326.99/x
  3. Step 3: Cross multiply
    20,705.63x = 28,574.57 × 12,326.99
  4. Step 4: Simplify right side
    20,705.63x = 352,238,326.59
  5. Step 5: Solve for x
    x = 352,238,326.59/20,705.63
  6. Step 6: Final answer
    x = 17,011.72

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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.