Home / 37,130.45-51,239.40-20,997.50

Finding the Fourth Proportional to 37,130.45, 51,239.40 and 20,997.50

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Solution

The fourth proportional to 37,130.45, 51,239.40 and 20,997.50 is: 28,976.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,130.45 : 51,239.40 = 20,997.50 : x
  2. Step 2: Convert to fraction form
    37,130.45/51,239.40 = 20,997.50/x
  3. Step 3: Cross multiply
    37,130.45x = 51,239.40 × 20,997.50
  4. Step 4: Simplify right side
    37,130.45x = 1,075,899,301.50
  5. Step 5: Solve for x
    x = 1,075,899,301.50/37,130.45
  6. Step 6: Final answer
    x = 28,976.20

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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.