Home / 38,130.40-52,618.57-21,135.39

Finding the Fourth Proportional to 38,130.40, 52,618.57 and 21,135.39

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Solution

The fourth proportional to 38,130.40, 52,618.57 and 21,135.39 is: 29,166.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,130.40 : 52,618.57 = 21,135.39 : x
  2. Step 2: Convert to fraction form
    38,130.40/52,618.57 = 21,135.39/x
  3. Step 3: Cross multiply
    38,130.40x = 52,618.57 × 21,135.39
  4. Step 4: Simplify right side
    38,130.40x = 1,112,113,998.19
  5. Step 5: Solve for x
    x = 1,112,113,998.19/38,130.40
  6. Step 6: Final answer
    x = 29,166.07

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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.