Home / 15,272.48-21,075.36-8,557.58

Finding the Fourth Proportional to 15,272.48, 21,075.36 and 8,557.58

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Solution

The fourth proportional to 15,272.48, 21,075.36 and 8,557.58 is: 11,809.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,272.48 : 21,075.36 = 8,557.58 : x
  2. Step 2: Convert to fraction form
    15,272.48/21,075.36 = 8,557.58/x
  3. Step 3: Cross multiply
    15,272.48x = 21,075.36 × 8,557.58
  4. Step 4: Simplify right side
    15,272.48x = 180,354,079.23
  5. Step 5: Solve for x
    x = 180,354,079.23/15,272.48
  6. Step 6: Final answer
    x = 11,809.09

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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.