Home / 28,967.40-39,987.27-18,904.47

Finding the Fourth Proportional to 28,967.40, 39,987.27 and 18,904.47

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Solution

The fourth proportional to 28,967.40, 39,987.27 and 18,904.47 is: 26,096.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,967.40 : 39,987.27 = 18,904.47 : x
  2. Step 2: Convert to fraction form
    28,967.40/39,987.27 = 18,904.47/x
  3. Step 3: Cross multiply
    28,967.40x = 39,987.27 × 18,904.47
  4. Step 4: Simplify right side
    28,967.40x = 755,938,146.10
  5. Step 5: Solve for x
    x = 755,938,146.10/28,967.40
  6. Step 6: Final answer
    x = 26,096.17

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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.