Home / 12,075.42-16,639.11-9,708.06

Finding the Fourth Proportional to 12,075.42, 16,639.11 and 9,708.06

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Solution

The fourth proportional to 12,075.42, 16,639.11 and 9,708.06 is: 13,377.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,075.42 : 16,639.11 = 9,708.06 : x
  2. Step 2: Convert to fraction form
    12,075.42/16,639.11 = 9,708.06/x
  3. Step 3: Cross multiply
    12,075.42x = 16,639.11 × 9,708.06
  4. Step 4: Simplify right side
    12,075.42x = 161,533,478.23
  5. Step 5: Solve for x
    x = 161,533,478.23/12,075.42
  6. Step 6: Final answer
    x = 13,377.05

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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.