Home / 19,994.16-30,009.80-10,140.40

Finding the Fourth Proportional to 19,994.16, 30,009.80 and 10,140.40

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Solution

The fourth proportional to 19,994.16, 30,009.80 and 10,140.40 is: 15,220.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,994.16 : 30,009.80 = 10,140.40 : x
  2. Step 2: Convert to fraction form
    19,994.16/30,009.80 = 10,140.40/x
  3. Step 3: Cross multiply
    19,994.16x = 30,009.80 × 10,140.40
  4. Step 4: Simplify right side
    19,994.16x = 304,311,375.92
  5. Step 5: Solve for x
    x = 304,311,375.92/19,994.16
  6. Step 6: Final answer
    x = 15,220.01

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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.