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Finding the Fourth Proportional to 32,870.80, 45,362.28 and 18,722.80

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Solution

The fourth proportional to 32,870.80, 45,362.28 and 18,722.80 is: 25,837.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,870.80 : 45,362.28 = 18,722.80 : x
  2. Step 2: Convert to fraction form
    32,870.80/45,362.28 = 18,722.80/x
  3. Step 3: Cross multiply
    32,870.80x = 45,362.28 × 18,722.80
  4. Step 4: Simplify right side
    32,870.80x = 849,308,895.98
  5. Step 5: Solve for x
    x = 849,308,895.98/32,870.80
  6. Step 6: Final answer
    x = 25,837.79

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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.