Home / 28,175.40-38,881.08-15,599.52

Finding the Fourth Proportional to 28,175.40, 38,881.08 and 15,599.52

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Solution

The fourth proportional to 28,175.40, 38,881.08 and 15,599.52 is: 21,526.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,175.40 : 38,881.08 = 15,599.52 : x
  2. Step 2: Convert to fraction form
    28,175.40/38,881.08 = 15,599.52/x
  3. Step 3: Cross multiply
    28,175.40x = 38,881.08 × 15,599.52
  4. Step 4: Simplify right side
    28,175.40x = 606,526,185.08
  5. Step 5: Solve for x
    x = 606,526,185.08/28,175.40
  6. Step 6: Final answer
    x = 21,526.80

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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.