Home / 20,601.56-28,430.32-12,101.40

Finding the Fourth Proportional to 20,601.56, 28,430.32 and 12,101.40

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Solution

The fourth proportional to 20,601.56, 28,430.32 and 12,101.40 is: 16,700.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.56 : 28,430.32 = 12,101.40 : x
  2. Step 2: Convert to fraction form
    20,601.56/28,430.32 = 12,101.40/x
  3. Step 3: Cross multiply
    20,601.56x = 28,430.32 × 12,101.40
  4. Step 4: Simplify right side
    20,601.56x = 344,046,674.45
  5. Step 5: Solve for x
    x = 344,046,674.45/20,601.56
  6. Step 6: Final answer
    x = 16,700.03

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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.