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Finding the Fourth Proportional to 30,387.65, 45,581.27 and 16,354.28

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Solution

The fourth proportional to 30,387.65, 45,581.27 and 16,354.28 is: 24,531.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,387.65 : 45,581.27 = 16,354.28 : x
  2. Step 2: Convert to fraction form
    30,387.65/45,581.27 = 16,354.28/x
  3. Step 3: Cross multiply
    30,387.65x = 45,581.27 × 16,354.28
  4. Step 4: Simplify right side
    30,387.65x = 745,448,852.34
  5. Step 5: Solve for x
    x = 745,448,852.34/30,387.65
  6. Step 6: Final answer
    x = 24,531.31

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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.