Home / 20,763.17-28,652.16-11,688.00

Finding the Fourth Proportional to 20,763.17, 28,652.16 and 11,688.00

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Solution

The fourth proportional to 20,763.17, 28,652.16 and 11,688.00 is: 16,128.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.17 : 28,652.16 = 11,688.00 : x
  2. Step 2: Convert to fraction form
    20,763.17/28,652.16 = 11,688.00/x
  3. Step 3: Cross multiply
    20,763.17x = 28,652.16 × 11,688.00
  4. Step 4: Simplify right side
    20,763.17x = 334,886,302.82
  5. Step 5: Solve for x
    x = 334,886,302.82/20,763.17
  6. Step 6: Final answer
    x = 16,128.86

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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.