Home / 14,275.08-19,705.14-8,685

Finding the Fourth Proportional to 14,275.08, 19,705.14 and 8,685

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Solution

The fourth proportional to 14,275.08, 19,705.14 and 8,685 is: 11,988.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,275.08 : 19,705.14 = 8,685 : x
  2. Step 2: Convert to fraction form
    14,275.08/19,705.14 = 8,685/x
  3. Step 3: Cross multiply
    14,275.08x = 19,705.14 × 8,685
  4. Step 4: Simplify right side
    14,275.08x = 171,139,140.90
  5. Step 5: Solve for x
    x = 171,139,140.90/14,275.08
  6. Step 6: Final answer
    x = 11,988.66

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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.