Home / 38,617.83-53,289.76-21,618.16

Finding the Fourth Proportional to 38,617.83, 53,289.76 and 21,618.16

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Solution

The fourth proportional to 38,617.83, 53,289.76 and 21,618.16 is: 29,831.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,617.83 : 53,289.76 = 21,618.16 : x
  2. Step 2: Convert to fraction form
    38,617.83/53,289.76 = 21,618.16/x
  3. Step 3: Cross multiply
    38,617.83x = 53,289.76 × 21,618.16
  4. Step 4: Simplify right side
    38,617.83x = 1,152,026,570.61
  5. Step 5: Solve for x
    x = 1,152,026,570.61/38,617.83
  6. Step 6: Final answer
    x = 29,831.47

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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.