Home / 28,686.30-42,968.97-13,117.02

Finding the Fourth Proportional to 28,686.30, 42,968.97 and 13,117.02

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Solution

The fourth proportional to 28,686.30, 42,968.97 and 13,117.02 is: 19,647.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,686.30 : 42,968.97 = 13,117.02 : x
  2. Step 2: Convert to fraction form
    28,686.30/42,968.97 = 13,117.02/x
  3. Step 3: Cross multiply
    28,686.30x = 42,968.97 × 13,117.02
  4. Step 4: Simplify right side
    28,686.30x = 563,624,838.87
  5. Step 5: Solve for x
    x = 563,624,838.87/28,686.30
  6. Step 6: Final answer
    x = 19,647.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.