Home / 30,281.25-45,420.04-11,302.21

Finding the Fourth Proportional to 30,281.25, 45,420.04 and 11,302.21

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Solution

The fourth proportional to 30,281.25, 45,420.04 and 11,302.21 is: 16,952.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,281.25 : 45,420.04 = 11,302.21 : x
  2. Step 2: Convert to fraction form
    30,281.25/45,420.04 = 11,302.21/x
  3. Step 3: Cross multiply
    30,281.25x = 45,420.04 × 11,302.21
  4. Step 4: Simplify right side
    30,281.25x = 513,346,830.29
  5. Step 5: Solve for x
    x = 513,346,830.29/30,281.25
  6. Step 6: Final answer
    x = 16,952.63

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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.