Home / 38,662.11-53,461.08-30,690.51

Finding the Fourth Proportional to 38,662.11, 53,461.08 and 30,690.51

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Solution

The fourth proportional to 38,662.11, 53,461.08 and 30,690.51 is: 42,438.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,662.11 : 53,461.08 = 30,690.51 : x
  2. Step 2: Convert to fraction form
    38,662.11/53,461.08 = 30,690.51/x
  3. Step 3: Cross multiply
    38,662.11x = 53,461.08 × 30,690.51
  4. Step 4: Simplify right side
    38,662.11x = 1,640,747,810.35
  5. Step 5: Solve for x
    x = 1,640,747,810.35/38,662.11
  6. Step 6: Final answer
    x = 42,438.13

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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.