Home / 38,780.02-53,521.03-21,784.29

Finding the Fourth Proportional to 38,780.02, 53,521.03 and 21,784.29

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Solution

The fourth proportional to 38,780.02, 53,521.03 and 21,784.29 is: 30,064.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,780.02 : 53,521.03 = 21,784.29 : x
  2. Step 2: Convert to fraction form
    38,780.02/53,521.03 = 21,784.29/x
  3. Step 3: Cross multiply
    38,780.02x = 53,521.03 × 21,784.29
  4. Step 4: Simplify right side
    38,780.02x = 1,165,917,704.93
  5. Step 5: Solve for x
    x = 1,165,917,704.93/38,780.02
  6. Step 6: Final answer
    x = 30,064.91

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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.