Home / 10,919.90-15,070.71-6,075.11

Finding the Fourth Proportional to 10,919.90, 15,070.71 and 6,075.11

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Solution

The fourth proportional to 10,919.90, 15,070.71 and 6,075.11 is: 8,384.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.90 : 15,070.71 = 6,075.11 : x
  2. Step 2: Convert to fraction form
    10,919.90/15,070.71 = 6,075.11/x
  3. Step 3: Cross multiply
    10,919.90x = 15,070.71 × 6,075.11
  4. Step 4: Simplify right side
    10,919.90x = 91,556,145.67
  5. Step 5: Solve for x
    x = 91,556,145.67/10,919.90
  6. Step 6: Final answer
    x = 8,384.34

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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.