Home / 37,124.45-51,231.12-20,991.50

Finding the Fourth Proportional to 37,124.45, 51,231.12 and 20,991.50

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Solution

The fourth proportional to 37,124.45, 51,231.12 and 20,991.50 is: 28,967.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,124.45 : 51,231.12 = 20,991.50 : x
  2. Step 2: Convert to fraction form
    37,124.45/51,231.12 = 20,991.50/x
  3. Step 3: Cross multiply
    37,124.45x = 51,231.12 × 20,991.50
  4. Step 4: Simplify right side
    37,124.45x = 1,075,418,055.48
  5. Step 5: Solve for x
    x = 1,075,418,055.48/37,124.45
  6. Step 6: Final answer
    x = 28,967.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.