Home / 38,784.78-58,140.06-12,471

Finding the Fourth Proportional to 38,784.78, 58,140.06 and 12,471

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Solution

The fourth proportional to 38,784.78, 58,140.06 and 12,471 is: 18,694.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,784.78 : 58,140.06 = 12,471 : x
  2. Step 2: Convert to fraction form
    38,784.78/58,140.06 = 12,471/x
  3. Step 3: Cross multiply
    38,784.78x = 58,140.06 × 12,471
  4. Step 4: Simplify right side
    38,784.78x = 725,064,688.26
  5. Step 5: Solve for x
    x = 725,064,688.26/38,784.78
  6. Step 6: Final answer
    x = 18,694.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.