Home / 19,117.84-28,638.36-8,715.28

Finding the Fourth Proportional to 19,117.84, 28,638.36 and 8,715.28

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Solution

The fourth proportional to 19,117.84, 28,638.36 and 8,715.28 is: 13,055.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,117.84 : 28,638.36 = 8,715.28 : x
  2. Step 2: Convert to fraction form
    19,117.84/28,638.36 = 8,715.28/x
  3. Step 3: Cross multiply
    19,117.84x = 28,638.36 × 8,715.28
  4. Step 4: Simplify right side
    19,117.84x = 249,591,326.14
  5. Step 5: Solve for x
    x = 249,591,326.14/19,117.84
  6. Step 6: Final answer
    x = 13,055.41

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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.