Home / 13,752.32-20,623.20-4,985.12

Finding the Fourth Proportional to 13,752.32, 20,623.20 and 4,985.12

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Solution

The fourth proportional to 13,752.32, 20,623.20 and 4,985.12 is: 7,475.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,752.32 : 20,623.20 = 4,985.12 : x
  2. Step 2: Convert to fraction form
    13,752.32/20,623.20 = 4,985.12/x
  3. Step 3: Cross multiply
    13,752.32x = 20,623.20 × 4,985.12
  4. Step 4: Simplify right side
    13,752.32x = 102,809,126.78
  5. Step 5: Solve for x
    x = 102,809,126.78/13,752.32
  6. Step 6: Final answer
    x = 7,475.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.