Home / 20,327.34-28,054.91-12,774.70

Finding the Fourth Proportional to 20,327.34, 28,054.91 and 12,774.70

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Solution

The fourth proportional to 20,327.34, 28,054.91 and 12,774.70 is: 17,631.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,327.34 : 28,054.91 = 12,774.70 : x
  2. Step 2: Convert to fraction form
    20,327.34/28,054.91 = 12,774.70/x
  3. Step 3: Cross multiply
    20,327.34x = 28,054.91 × 12,774.70
  4. Step 4: Simplify right side
    20,327.34x = 358,393,058.78
  5. Step 5: Solve for x
    x = 358,393,058.78/20,327.34
  6. Step 6: Final answer
    x = 17,631.08

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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.