Home / 38,142.48-52,639.08-21,148.68

Finding the Fourth Proportional to 38,142.48, 52,639.08 and 21,148.68

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Solution

The fourth proportional to 38,142.48, 52,639.08 and 21,148.68 is: 29,186.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,142.48 : 52,639.08 = 21,148.68 : x
  2. Step 2: Convert to fraction form
    38,142.48/52,639.08 = 21,148.68/x
  3. Step 3: Cross multiply
    38,142.48x = 52,639.08 × 21,148.68
  4. Step 4: Simplify right side
    38,142.48x = 1,113,247,058.41
  5. Step 5: Solve for x
    x = 1,113,247,058.41/38,142.48
  6. Step 6: Final answer
    x = 29,186.54

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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.