Home / 38,130.90-52,619.27-21,135.89

Finding the Fourth Proportional to 38,130.90, 52,619.27 and 21,135.89

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Solution

The fourth proportional to 38,130.90, 52,619.27 and 21,135.89 is: 29,166.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,130.90 : 52,619.27 = 21,135.89 : x
  2. Step 2: Convert to fraction form
    38,130.90/52,619.27 = 21,135.89/x
  3. Step 3: Cross multiply
    38,130.90x = 52,619.27 × 21,135.89
  4. Step 4: Simplify right side
    38,130.90x = 1,112,154,733.82
  5. Step 5: Solve for x
    x = 1,112,154,733.82/38,130.90
  6. Step 6: Final answer
    x = 29,166.76

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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.