Home / 14,478.45-19,980.06-8,190.82

Finding the Fourth Proportional to 14,478.45, 19,980.06 and 8,190.82

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Solution

The fourth proportional to 14,478.45, 19,980.06 and 8,190.82 is: 11,303.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,478.45 : 19,980.06 = 8,190.82 : x
  2. Step 2: Convert to fraction form
    14,478.45/19,980.06 = 8,190.82/x
  3. Step 3: Cross multiply
    14,478.45x = 19,980.06 × 8,190.82
  4. Step 4: Simplify right side
    14,478.45x = 163,653,075.05
  5. Step 5: Solve for x
    x = 163,653,075.05/14,478.45
  6. Step 6: Final answer
    x = 11,303.22

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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.