Home / 15,272.34-21,075.48-8,465.70

Finding the Fourth Proportional to 15,272.34, 21,075.48 and 8,465.70

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Solution

The fourth proportional to 15,272.34, 21,075.48 and 8,465.70 is: 11,682.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,272.34 : 21,075.48 = 8,465.70 : x
  2. Step 2: Convert to fraction form
    15,272.34/21,075.48 = 8,465.70/x
  3. Step 3: Cross multiply
    15,272.34x = 21,075.48 × 8,465.70
  4. Step 4: Simplify right side
    15,272.34x = 178,418,691.04
  5. Step 5: Solve for x
    x = 178,418,691.04/15,272.34
  6. Step 6: Final answer
    x = 11,682.47

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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.