Home / 31,728,216.38-43,798,331.75-21,428,889.80

Finding the Fourth Proportional to 31,728,216.38, 43,798,331.75 and 21,428,889.80

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Solution

The fourth proportional to 31,728,216.38, 43,798,331.75 and 21,428,889.80 is: 29,580,913.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,728,216.38 : 43,798,331.75 = 21,428,889.80 : x
  2. Step 2: Convert to fraction form
    31,728,216.38/43,798,331.75 = 21,428,889.80/x
  3. Step 3: Cross multiply
    31,728,216.38x = 43,798,331.75 × 21,428,889.80
  4. Step 4: Simplify right side
    31,728,216.38x = 938,549,624,168,455.12
  5. Step 5: Solve for x
    x = 938,549,624,168,455.12/31,728,216.38
  6. Step 6: Final answer
    x = 29,580,913.50

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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.