Home / 15,271.02-21,075.30-8,556.57

Finding the Fourth Proportional to 15,271.02, 21,075.30 and 8,556.57

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Solution

The fourth proportional to 15,271.02, 21,075.30 and 8,556.57 is: 11,808.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,271.02 : 21,075.30 = 8,556.57 : x
  2. Step 2: Convert to fraction form
    15,271.02/21,075.30 = 8,556.57/x
  3. Step 3: Cross multiply
    15,271.02x = 21,075.30 × 8,556.57
  4. Step 4: Simplify right side
    15,271.02x = 180,332,279.72
  5. Step 5: Solve for x
    x = 180,332,279.72/15,271.02
  6. Step 6: Final answer
    x = 11,808.79

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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.