Home / 15,272.88-21,075.96-8,558.40

Finding the Fourth Proportional to 15,272.88, 21,075.96 and 8,558.40

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Solution

The fourth proportional to 15,272.88, 21,075.96 and 8,558.40 is: 11,810.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,272.88 : 21,075.96 = 8,558.40 : x
  2. Step 2: Convert to fraction form
    15,272.88/21,075.96 = 8,558.40/x
  3. Step 3: Cross multiply
    15,272.88x = 21,075.96 × 8,558.40
  4. Step 4: Simplify right side
    15,272.88x = 180,376,496.06
  5. Step 5: Solve for x
    x = 180,376,496.06/15,272.88
  6. Step 6: Final answer
    x = 11,810.25

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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.