Home / 30,436.86-45,631.80-19,320.42

Finding the Fourth Proportional to 30,436.86, 45,631.80 and 19,320.42

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Solution

The fourth proportional to 30,436.86, 45,631.80 and 19,320.42 is: 28,965.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,436.86 : 45,631.80 = 19,320.42 : x
  2. Step 2: Convert to fraction form
    30,436.86/45,631.80 = 19,320.42/x
  3. Step 3: Cross multiply
    30,436.86x = 45,631.80 × 19,320.42
  4. Step 4: Simplify right side
    30,436.86x = 881,625,541.36
  5. Step 5: Solve for x
    x = 881,625,541.36/30,436.86
  6. Step 6: Final answer
    x = 28,965.72

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Why These Related Problems?

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