Home / 15,272.30-21,075.60-8,558.20

Finding the Fourth Proportional to 15,272.30, 21,075.60 and 8,558.20

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Solution

The fourth proportional to 15,272.30, 21,075.60 and 8,558.20 is: 11,810.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,272.30 : 21,075.60 = 8,558.20 : x
  2. Step 2: Convert to fraction form
    15,272.30/21,075.60 = 8,558.20/x
  3. Step 3: Cross multiply
    15,272.30x = 21,075.60 × 8,558.20
  4. Step 4: Simplify right side
    15,272.30x = 180,369,199.92
  5. Step 5: Solve for x
    x = 180,369,199.92/15,272.30
  6. Step 6: Final answer
    x = 11,810.22

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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.