Home / 28,583.74-39,410.71-21,007

Finding the Fourth Proportional to 28,583.74, 39,410.71 and 21,007

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Solution

The fourth proportional to 28,583.74, 39,410.71 and 21,007 is: 28,964.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,583.74 : 39,410.71 = 21,007 : x
  2. Step 2: Convert to fraction form
    28,583.74/39,410.71 = 21,007/x
  3. Step 3: Cross multiply
    28,583.74x = 39,410.71 × 21,007
  4. Step 4: Simplify right side
    28,583.74x = 827,900,784.97
  5. Step 5: Solve for x
    x = 827,900,784.97/28,583.74
  6. Step 6: Final answer
    x = 28,964.05

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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.