Home / 45,290.90-67,928.58-12,011.51

Finding the Fourth Proportional to 45,290.90, 67,928.58 and 12,011.51

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Solution

The fourth proportional to 45,290.90, 67,928.58 and 12,011.51 is: 18,015.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,290.90 : 67,928.58 = 12,011.51 : x
  2. Step 2: Convert to fraction form
    45,290.90/67,928.58 = 12,011.51/x
  3. Step 3: Cross multiply
    45,290.90x = 67,928.58 × 12,011.51
  4. Step 4: Simplify right side
    45,290.90x = 815,924,478.31
  5. Step 5: Solve for x
    x = 815,924,478.31/45,290.90
  6. Step 6: Final answer
    x = 18,015.20

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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.