Home / 28,185.36-42,254.28-14,128.08

Finding the Fourth Proportional to 28,185.36, 42,254.28 and 14,128.08

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Solution

The fourth proportional to 28,185.36, 42,254.28 and 14,128.08 is: 21,180.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,185.36 : 42,254.28 = 14,128.08 : x
  2. Step 2: Convert to fraction form
    28,185.36/42,254.28 = 14,128.08/x
  3. Step 3: Cross multiply
    28,185.36x = 42,254.28 × 14,128.08
  4. Step 4: Simplify right side
    28,185.36x = 596,971,848.18
  5. Step 5: Solve for x
    x = 596,971,848.18/28,185.36
  6. Step 6: Final answer
    x = 21,180.21

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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.