Home / 38,509.83-53,137.58-21,742.47

Finding the Fourth Proportional to 38,509.83, 53,137.58 and 21,742.47

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Solution

The fourth proportional to 38,509.83, 53,137.58 and 21,742.47 is: 30,001.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,509.83 : 53,137.58 = 21,742.47 : x
  2. Step 2: Convert to fraction form
    38,509.83/53,137.58 = 21,742.47/x
  3. Step 3: Cross multiply
    38,509.83x = 53,137.58 × 21,742.47
  4. Step 4: Simplify right side
    38,509.83x = 1,155,342,130.31
  5. Step 5: Solve for x
    x = 1,155,342,130.31/38,509.83
  6. Step 6: Final answer
    x = 30,001.23

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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.