Home / 14,389.84-19,869.96-9,689.68

Finding the Fourth Proportional to 14,389.84, 19,869.96 and 9,689.68

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Solution

The fourth proportional to 14,389.84, 19,869.96 and 9,689.68 is: 13,379.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,389.84 : 19,869.96 = 9,689.68 : x
  2. Step 2: Convert to fraction form
    14,389.84/19,869.96 = 9,689.68/x
  3. Step 3: Cross multiply
    14,389.84x = 19,869.96 × 9,689.68
  4. Step 4: Simplify right side
    14,389.84x = 192,533,554.01
  5. Step 5: Solve for x
    x = 192,533,554.01/14,389.84
  6. Step 6: Final answer
    x = 13,379.83

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1.5x scale

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.