Home / 39,044.04-53,880.64-21,139.08

Finding the Fourth Proportional to 39,044.04, 53,880.64 and 21,139.08

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Solution

The fourth proportional to 39,044.04, 53,880.64 and 21,139.08 is: 29,171.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,044.04 : 53,880.64 = 21,139.08 : x
  2. Step 2: Convert to fraction form
    39,044.04/53,880.64 = 21,139.08/x
  3. Step 3: Cross multiply
    39,044.04x = 53,880.64 × 21,139.08
  4. Step 4: Simplify right side
    39,044.04x = 1,138,987,159.41
  5. Step 5: Solve for x
    x = 1,138,987,159.41/39,044.04
  6. Step 6: Final answer
    x = 29,171.86

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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.