Home / 30,899,217.28-42,636,559.36-18,506,406.88

Finding the Fourth Proportional to 30,899,217.28, 42,636,559.36 and 18,506,406.88

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Solution

The fourth proportional to 30,899,217.28, 42,636,559.36 and 18,506,406.88 is: 25,536,229.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,899,217.28 : 42,636,559.36 = 18,506,406.88 : x
  2. Step 2: Convert to fraction form
    30,899,217.28/42,636,559.36 = 18,506,406.88/x
  3. Step 3: Cross multiply
    30,899,217.28x = 42,636,559.36 × 18,506,406.88
  4. Step 4: Simplify right side
    30,899,217.28x = 789,049,515,479,432.38
  5. Step 5: Solve for x
    x = 789,049,515,479,432.38/30,899,217.28
  6. Step 6: Final answer
    x = 25,536,229.88

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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.