Home / 30,042.36-45,068.40-12,513.96

Finding the Fourth Proportional to 30,042.36, 45,068.40 and 12,513.96

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Solution

The fourth proportional to 30,042.36, 45,068.40 and 12,513.96 is: 18,772.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,042.36 : 45,068.40 = 12,513.96 : x
  2. Step 2: Convert to fraction form
    30,042.36/45,068.40 = 12,513.96/x
  3. Step 3: Cross multiply
    30,042.36x = 45,068.40 × 12,513.96
  4. Step 4: Simplify right side
    30,042.36x = 563,984,154.86
  5. Step 5: Solve for x
    x = 563,984,154.86/30,042.36
  6. Step 6: Final answer
    x = 18,772.96

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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.