Home / 38,690.32-53,389.92-21,693.28

Finding the Fourth Proportional to 38,690.32, 53,389.92 and 21,693.28

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Solution

The fourth proportional to 38,690.32, 53,389.92 and 21,693.28 is: 29,935.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,690.32 : 53,389.92 = 21,693.28 : x
  2. Step 2: Convert to fraction form
    38,690.32/53,389.92 = 21,693.28/x
  3. Step 3: Cross multiply
    38,690.32x = 53,389.92 × 21,693.28
  4. Step 4: Simplify right side
    38,690.32x = 1,158,202,483.74
  5. Step 5: Solve for x
    x = 1,158,202,483.74/38,690.32
  6. Step 6: Final answer
    x = 29,935.20

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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.