Home / 20,652.48-28,501.20-11,700.40

Finding the Fourth Proportional to 20,652.48, 28,501.20 and 11,700.40

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Solution

The fourth proportional to 20,652.48, 28,501.20 and 11,700.40 is: 16,146.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,652.48 : 28,501.20 = 11,700.40 : x
  2. Step 2: Convert to fraction form
    20,652.48/28,501.20 = 11,700.40/x
  3. Step 3: Cross multiply
    20,652.48x = 28,501.20 × 11,700.40
  4. Step 4: Simplify right side
    20,652.48x = 333,475,440.48
  5. Step 5: Solve for x
    x = 333,475,440.48/20,652.48
  6. Step 6: Final answer
    x = 16,146.99

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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.