Home / 19,075.20-28,612.80-7,994.40

Finding the Fourth Proportional to 19,075.20, 28,612.80 and 7,994.40

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Solution

The fourth proportional to 19,075.20, 28,612.80 and 7,994.40 is: 11,991.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,075.20 : 28,612.80 = 7,994.40 : x
  2. Step 2: Convert to fraction form
    19,075.20/28,612.80 = 7,994.40/x
  3. Step 3: Cross multiply
    19,075.20x = 28,612.80 × 7,994.40
  4. Step 4: Simplify right side
    19,075.20x = 228,742,168.32
  5. Step 5: Solve for x
    x = 228,742,168.32/19,075.20
  6. Step 6: Final answer
    x = 11,991.60

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Similar ratio
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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.