Home / 39,710.32-54,800.12-21,804.72

Finding the Fourth Proportional to 39,710.32, 54,800.12 and 21,804.72

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Solution

The fourth proportional to 39,710.32, 54,800.12 and 21,804.72 is: 30,090.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,710.32 : 54,800.12 = 21,804.72 : x
  2. Step 2: Convert to fraction form
    39,710.32/54,800.12 = 21,804.72/x
  3. Step 3: Cross multiply
    39,710.32x = 54,800.12 × 21,804.72
  4. Step 4: Simplify right side
    39,710.32x = 1,194,901,272.57
  5. Step 5: Solve for x
    x = 1,194,901,272.57/39,710.32
  6. Step 6: Final answer
    x = 30,090.45

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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.