Home / 38,508.81-53,140.48-21,512.98

Finding the Fourth Proportional to 38,508.81, 53,140.48 and 21,512.98

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Solution

The fourth proportional to 38,508.81, 53,140.48 and 21,512.98 is: 29,686.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,508.81 : 53,140.48 = 21,512.98 : x
  2. Step 2: Convert to fraction form
    38,508.81/53,140.48 = 21,512.98/x
  3. Step 3: Cross multiply
    38,508.81x = 53,140.48 × 21,512.98
  4. Step 4: Simplify right side
    38,508.81x = 1,143,210,083.43
  5. Step 5: Solve for x
    x = 1,143,210,083.43/38,508.81
  6. Step 6: Final answer
    x = 29,686.98

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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.