Home / 20,681.45-28,545.63-11,734.28

Finding the Fourth Proportional to 20,681.45, 28,545.63 and 11,734.28

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Solution

The fourth proportional to 20,681.45, 28,545.63 and 11,734.28 is: 16,196.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.45 : 28,545.63 = 11,734.28 : x
  2. Step 2: Convert to fraction form
    20,681.45/28,545.63 = 11,734.28/x
  3. Step 3: Cross multiply
    20,681.45x = 28,545.63 × 11,734.28
  4. Step 4: Simplify right side
    20,681.45x = 334,962,415.20
  5. Step 5: Solve for x
    x = 334,962,415.20/20,681.45
  6. Step 6: Final answer
    x = 16,196.27

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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.