Home / 30,398.74-45,603-12,868.72

Finding the Fourth Proportional to 30,398.74, 45,603 and 12,868.72

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Solution

The fourth proportional to 30,398.74, 45,603 and 12,868.72 is: 19,305.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,398.74 : 45,603 = 12,868.72 : x
  2. Step 2: Convert to fraction form
    30,398.74/45,603 = 12,868.72/x
  3. Step 3: Cross multiply
    30,398.74x = 45,603 × 12,868.72
  4. Step 4: Simplify right side
    30,398.74x = 586,852,238.16
  5. Step 5: Solve for x
    x = 586,852,238.16/30,398.74
  6. Step 6: Final answer
    x = 19,305.15

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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.