Home / 20,490.04-30,715.84-11,116.32

Finding the Fourth Proportional to 20,490.04, 30,715.84 and 11,116.32

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Solution

The fourth proportional to 20,490.04, 30,715.84 and 11,116.32 is: 16,664.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,490.04 : 30,715.84 = 11,116.32 : x
  2. Step 2: Convert to fraction form
    20,490.04/30,715.84 = 11,116.32/x
  3. Step 3: Cross multiply
    20,490.04x = 30,715.84 × 11,116.32
  4. Step 4: Simplify right side
    20,490.04x = 341,447,106.51
  5. Step 5: Solve for x
    x = 341,447,106.51/20,490.04
  6. Step 6: Final answer
    x = 16,664.05

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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.