Home / 38,966.42-53,772.60-21,970.52

Finding the Fourth Proportional to 38,966.42, 53,772.60 and 21,970.52

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Solution

The fourth proportional to 38,966.42, 53,772.60 and 21,970.52 is: 30,318.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,966.42 : 53,772.60 = 21,970.52 : x
  2. Step 2: Convert to fraction form
    38,966.42/53,772.60 = 21,970.52/x
  3. Step 3: Cross multiply
    38,966.42x = 53,772.60 × 21,970.52
  4. Step 4: Simplify right side
    38,966.42x = 1,181,411,983.75
  5. Step 5: Solve for x
    x = 1,181,411,983.75/38,966.42
  6. Step 6: Final answer
    x = 30,318.72

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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.