Home / 38,509.93-53,138.45-21,512.07

Finding the Fourth Proportional to 38,509.93, 53,138.45 and 21,512.07

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Solution

The fourth proportional to 38,509.93, 53,138.45 and 21,512.07 is: 29,683.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,509.93 : 53,138.45 = 21,512.07 : x
  2. Step 2: Convert to fraction form
    38,509.93/53,138.45 = 21,512.07/x
  3. Step 3: Cross multiply
    38,509.93x = 53,138.45 × 21,512.07
  4. Step 4: Simplify right side
    38,509.93x = 1,143,118,138.32
  5. Step 5: Solve for x
    x = 1,143,118,138.32/38,509.93
  6. Step 6: Final answer
    x = 29,683.72

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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.