Home / 19,988.63-29,977.46-7,507.68

Finding the Fourth Proportional to 19,988.63, 29,977.46 and 7,507.68

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Solution

The fourth proportional to 19,988.63, 29,977.46 and 7,507.68 is: 11,259.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,988.63 : 29,977.46 = 7,507.68 : x
  2. Step 2: Convert to fraction form
    19,988.63/29,977.46 = 7,507.68/x
  3. Step 3: Cross multiply
    19,988.63x = 29,977.46 × 7,507.68
  4. Step 4: Simplify right side
    19,988.63x = 225,061,139.35
  5. Step 5: Solve for x
    x = 225,061,139.35/19,988.63
  6. Step 6: Final answer
    x = 11,259.46

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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.