Home / 38,730.79-53,444.09-21,732.74

Finding the Fourth Proportional to 38,730.79, 53,444.09 and 21,732.74

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Solution

The fourth proportional to 38,730.79, 53,444.09 and 21,732.74 is: 29,988.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,730.79 : 53,444.09 = 21,732.74 : x
  2. Step 2: Convert to fraction form
    38,730.79/53,444.09 = 21,732.74/x
  3. Step 3: Cross multiply
    38,730.79x = 53,444.09 × 21,732.74
  4. Step 4: Simplify right side
    38,730.79x = 1,161,486,512.51
  5. Step 5: Solve for x
    x = 1,161,486,512.51/38,730.79
  6. Step 6: Final answer
    x = 29,988.71

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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.