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Finding the Fourth Proportional to 30,007.45, 45,006.45 and 18,880.08

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Solution

The fourth proportional to 30,007.45, 45,006.45 and 18,880.08 is: 28,317.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,007.45 : 45,006.45 = 18,880.08 : x
  2. Step 2: Convert to fraction form
    30,007.45/45,006.45 = 18,880.08/x
  3. Step 3: Cross multiply
    30,007.45x = 45,006.45 × 18,880.08
  4. Step 4: Simplify right side
    30,007.45x = 849,725,376.52
  5. Step 5: Solve for x
    x = 849,725,376.52/30,007.45
  6. Step 6: Final answer
    x = 28,317.15

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1.5x scale

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.