Home / 38,968.16-53,778.80-21,973.95

Finding the Fourth Proportional to 38,968.16, 53,778.80 and 21,973.95

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Solution

The fourth proportional to 38,968.16, 53,778.80 and 21,973.95 is: 30,325.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,968.16 : 53,778.80 = 21,973.95 : x
  2. Step 2: Convert to fraction form
    38,968.16/53,778.80 = 21,973.95/x
  3. Step 3: Cross multiply
    38,968.16x = 53,778.80 × 21,973.95
  4. Step 4: Simplify right side
    38,968.16x = 1,181,732,717.19
  5. Step 5: Solve for x
    x = 1,181,732,717.19/38,968.16
  6. Step 6: Final answer
    x = 30,325.60

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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.