Home / 20,153.40-30,199.30-13,555.16

Finding the Fourth Proportional to 20,153.40, 30,199.30 and 13,555.16

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Solution

The fourth proportional to 20,153.40, 30,199.30 and 13,555.16 is: 20,312.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,153.40 : 30,199.30 = 13,555.16 : x
  2. Step 2: Convert to fraction form
    20,153.40/30,199.30 = 13,555.16/x
  3. Step 3: Cross multiply
    20,153.40x = 30,199.30 × 13,555.16
  4. Step 4: Simplify right side
    20,153.40x = 409,356,343.39
  5. Step 5: Solve for x
    x = 409,356,343.39/20,153.40
  6. Step 6: Final answer
    x = 20,312.02

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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.