Home / 15,102.08-20,821.76-10,800.32

Finding the Fourth Proportional to 15,102.08, 20,821.76 and 10,800.32

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Solution

The fourth proportional to 15,102.08, 20,821.76 and 10,800.32 is: 14,890.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,102.08 : 20,821.76 = 10,800.32 : x
  2. Step 2: Convert to fraction form
    15,102.08/20,821.76 = 10,800.32/x
  3. Step 3: Cross multiply
    15,102.08x = 20,821.76 × 10,800.32
  4. Step 4: Simplify right side
    15,102.08x = 224,881,670.96
  5. Step 5: Solve for x
    x = 224,881,670.96/15,102.08
  6. Step 6: Final answer
    x = 14,890.77

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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.