Home / 38,510.08-53,137.92-21,742.72

Finding the Fourth Proportional to 38,510.08, 53,137.92 and 21,742.72

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Solution

The fourth proportional to 38,510.08, 53,137.92 and 21,742.72 is: 30,001.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,510.08 : 53,137.92 = 21,742.72 : x
  2. Step 2: Convert to fraction form
    38,510.08/53,137.92 = 21,742.72/x
  3. Step 3: Cross multiply
    38,510.08x = 53,137.92 × 21,742.72
  4. Step 4: Simplify right side
    38,510.08x = 1,155,362,915.94
  5. Step 5: Solve for x
    x = 1,155,362,915.94/38,510.08
  6. Step 6: Final answer
    x = 30,001.57

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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.