Home / 38,376.79-52,956.35-21,379.30

Finding the Fourth Proportional to 38,376.79, 52,956.35 and 21,379.30

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Solution

The fourth proportional to 38,376.79, 52,956.35 and 21,379.30 is: 29,501.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,376.79 : 52,956.35 = 21,379.30 : x
  2. Step 2: Convert to fraction form
    38,376.79/52,956.35 = 21,379.30/x
  3. Step 3: Cross multiply
    38,376.79x = 52,956.35 × 21,379.30
  4. Step 4: Simplify right side
    38,376.79x = 1,132,169,534.44
  5. Step 5: Solve for x
    x = 1,132,169,534.44/38,376.79
  6. Step 6: Final answer
    x = 29,501.42

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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.