Home / 15,271.43-21,075.84-8,556.93

Finding the Fourth Proportional to 15,271.43, 21,075.84 and 8,556.93

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Solution

The fourth proportional to 15,271.43, 21,075.84 and 8,556.93 is: 11,809.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,271.43 : 21,075.84 = 8,556.93 : x
  2. Step 2: Convert to fraction form
    15,271.43/21,075.84 = 8,556.93/x
  3. Step 3: Cross multiply
    15,271.43x = 21,075.84 × 8,556.93
  4. Step 4: Simplify right side
    15,271.43x = 180,344,487.57
  5. Step 5: Solve for x
    x = 180,344,487.57/15,271.43
  6. Step 6: Final answer
    x = 11,809.28

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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.