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Finding the Fourth Proportional to 25,357.80, 38,036.70 and 25,012.20

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Solution

The fourth proportional to 25,357.80, 38,036.70 and 25,012.20 is: 37,518.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,357.80 : 38,036.70 = 25,012.20 : x
  2. Step 2: Convert to fraction form
    25,357.80/38,036.70 = 25,012.20/x
  3. Step 3: Cross multiply
    25,357.80x = 38,036.70 × 25,012.20
  4. Step 4: Simplify right side
    25,357.80x = 951,381,547.74
  5. Step 5: Solve for x
    x = 951,381,547.74/25,357.80
  6. Step 6: Final answer
    x = 37,518.30

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.