Home / 14,290.11-19,719.90-7,916.45

Finding the Fourth Proportional to 14,290.11, 19,719.90 and 7,916.45

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Solution

The fourth proportional to 14,290.11, 19,719.90 and 7,916.45 is: 10,924.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,290.11 : 19,719.90 = 7,916.45 : x
  2. Step 2: Convert to fraction form
    14,290.11/19,719.90 = 7,916.45/x
  3. Step 3: Cross multiply
    14,290.11x = 19,719.90 × 7,916.45
  4. Step 4: Simplify right side
    14,290.11x = 156,111,503.76
  5. Step 5: Solve for x
    x = 156,111,503.76/14,290.11
  6. Step 6: Final answer
    x = 10,924.44

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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.