Home / 39,186.46-54,077.12-21,281.32

Finding the Fourth Proportional to 39,186.46, 54,077.12 and 21,281.32

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Solution

The fourth proportional to 39,186.46, 54,077.12 and 21,281.32 is: 29,368.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,186.46 : 54,077.12 = 21,281.32 : x
  2. Step 2: Convert to fraction form
    39,186.46/54,077.12 = 21,281.32/x
  3. Step 3: Cross multiply
    39,186.46x = 54,077.12 × 21,281.32
  4. Step 4: Simplify right side
    39,186.46x = 1,150,832,495.40
  5. Step 5: Solve for x
    x = 1,150,832,495.40/39,186.46
  6. Step 6: Final answer
    x = 29,368.12

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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.