Home / 38,130.93-52,620.75-21,135.47

Finding the Fourth Proportional to 38,130.93, 52,620.75 and 21,135.47

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Solution

The fourth proportional to 38,130.93, 52,620.75 and 21,135.47 is: 29,166.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,130.93 : 52,620.75 = 21,135.47 : x
  2. Step 2: Convert to fraction form
    38,130.93/52,620.75 = 21,135.47/x
  3. Step 3: Cross multiply
    38,130.93x = 52,620.75 × 21,135.47
  4. Step 4: Simplify right side
    38,130.93x = 1,112,164,019.90
  5. Step 5: Solve for x
    x = 1,112,164,019.90/38,130.93
  6. Step 6: Final answer
    x = 29,166.98

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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.