Home / 28,173.72-38,881.71-15,599.28

Finding the Fourth Proportional to 28,173.72, 38,881.71 and 15,599.28

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Solution

The fourth proportional to 28,173.72, 38,881.71 and 15,599.28 is: 21,528.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,173.72 : 38,881.71 = 15,599.28 : x
  2. Step 2: Convert to fraction form
    28,173.72/38,881.71 = 15,599.28/x
  3. Step 3: Cross multiply
    28,173.72x = 38,881.71 × 15,599.28
  4. Step 4: Simplify right side
    28,173.72x = 606,526,681.17
  5. Step 5: Solve for x
    x = 606,526,681.17/28,173.72
  6. Step 6: Final answer
    x = 21,528.10

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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.