Home / 38,990.95-53,807.51-21,085.97

Finding the Fourth Proportional to 38,990.95, 53,807.51 and 21,085.97

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Solution

The fourth proportional to 38,990.95, 53,807.51 and 21,085.97 is: 29,098.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,990.95 : 53,807.51 = 21,085.97 : x
  2. Step 2: Convert to fraction form
    38,990.95/53,807.51 = 21,085.97/x
  3. Step 3: Cross multiply
    38,990.95x = 53,807.51 × 21,085.97
  4. Step 4: Simplify right side
    38,990.95x = 1,134,583,325.31
  5. Step 5: Solve for x
    x = 1,134,583,325.31/38,990.95
  6. Step 6: Final answer
    x = 29,098.63

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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.