Home / 38,911.17-53,698.86-21,685.10

Finding the Fourth Proportional to 38,911.17, 53,698.86 and 21,685.10

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Solution

The fourth proportional to 38,911.17, 53,698.86 and 21,685.10 is: 29,926.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,911.17 : 53,698.86 = 21,685.10 : x
  2. Step 2: Convert to fraction form
    38,911.17/53,698.86 = 21,685.10/x
  3. Step 3: Cross multiply
    38,911.17x = 53,698.86 × 21,685.10
  4. Step 4: Simplify right side
    38,911.17x = 1,164,464,772.07
  5. Step 5: Solve for x
    x = 1,164,464,772.07/38,911.17
  6. Step 6: Final answer
    x = 29,926.23

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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.