Home / 39,116.76-53,980.17-21,653.55

Finding the Fourth Proportional to 39,116.76, 53,980.17 and 21,653.55

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Solution

The fourth proportional to 39,116.76, 53,980.17 and 21,653.55 is: 29,881.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,116.76 : 53,980.17 = 21,653.55 : x
  2. Step 2: Convert to fraction form
    39,116.76/53,980.17 = 21,653.55/x
  3. Step 3: Cross multiply
    39,116.76x = 53,980.17 × 21,653.55
  4. Step 4: Simplify right side
    39,116.76x = 1,168,862,310.10
  5. Step 5: Solve for x
    x = 1,168,862,310.10/39,116.76
  6. Step 6: Final answer
    x = 29,881.37

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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.