Home / 38,682.18-53,384.67-21,686.16

Finding the Fourth Proportional to 38,682.18, 53,384.67 and 21,686.16

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Solution

The fourth proportional to 38,682.18, 53,384.67 and 21,686.16 is: 29,928.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,682.18 : 53,384.67 = 21,686.16 : x
  2. Step 2: Convert to fraction form
    38,682.18/53,384.67 = 21,686.16/x
  3. Step 3: Cross multiply
    38,682.18x = 53,384.67 × 21,686.16
  4. Step 4: Simplify right side
    38,682.18x = 1,157,708,495.17
  5. Step 5: Solve for x
    x = 1,157,708,495.17/38,682.18
  6. Step 6: Final answer
    x = 29,928.73

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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.