Home / 10,075.49-15,138.75-6,379.46

Finding the Fourth Proportional to 10,075.49, 15,138.75 and 6,379.46

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Solution

The fourth proportional to 10,075.49, 15,138.75 and 6,379.46 is: 9,585.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,075.49 : 15,138.75 = 6,379.46 : x
  2. Step 2: Convert to fraction form
    10,075.49/15,138.75 = 6,379.46/x
  3. Step 3: Cross multiply
    10,075.49x = 15,138.75 × 6,379.46
  4. Step 4: Simplify right side
    10,075.49x = 96,577,050.08
  5. Step 5: Solve for x
    x = 96,577,050.08/10,075.49
  6. Step 6: Final answer
    x = 9,585.35

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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.