Home / 30,160.81-45,233.93-12,643.75

Finding the Fourth Proportional to 30,160.81, 45,233.93 and 12,643.75

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Solution

The fourth proportional to 30,160.81, 45,233.93 and 12,643.75 is: 18,962.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,160.81 : 45,233.93 = 12,643.75 : x
  2. Step 2: Convert to fraction form
    30,160.81/45,233.93 = 12,643.75/x
  3. Step 3: Cross multiply
    30,160.81x = 45,233.93 × 12,643.75
  4. Step 4: Simplify right side
    30,160.81x = 571,926,439.22
  5. Step 5: Solve for x
    x = 571,926,439.22/30,160.81
  6. Step 6: Final answer
    x = 18,962.57

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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.