Home / 38,427.75-53,030.30-20,763.75

Finding the Fourth Proportional to 38,427.75, 53,030.30 and 20,763.75

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Solution

The fourth proportional to 38,427.75, 53,030.30 and 20,763.75 is: 28,653.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,427.75 : 53,030.30 = 20,763.75 : x
  2. Step 2: Convert to fraction form
    38,427.75/53,030.30 = 20,763.75/x
  3. Step 3: Cross multiply
    38,427.75x = 53,030.30 × 20,763.75
  4. Step 4: Simplify right side
    38,427.75x = 1,101,107,787.81
  5. Step 5: Solve for x
    x = 1,101,107,787.81/38,427.75
  6. Step 6: Final answer
    x = 28,653.98

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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.