Home / 30,175.20-45,267.84-12,646.35

Finding the Fourth Proportional to 30,175.20, 45,267.84 and 12,646.35

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Solution

The fourth proportional to 30,175.20, 45,267.84 and 12,646.35 is: 18,971.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,175.20 : 45,267.84 = 12,646.35 : x
  2. Step 2: Convert to fraction form
    30,175.20/45,267.84 = 12,646.35/x
  3. Step 3: Cross multiply
    30,175.20x = 45,267.84 × 12,646.35
  4. Step 4: Simplify right side
    30,175.20x = 572,472,948.38
  5. Step 5: Solve for x
    x = 572,472,948.38/30,175.20
  6. Step 6: Final answer
    x = 18,971.64

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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.