Home / 20,684.74-28,561.53-14,386.18

Finding the Fourth Proportional to 20,684.74, 28,561.53 and 14,386.18

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Solution

The fourth proportional to 20,684.74, 28,561.53 and 14,386.18 is: 19,864.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684.74 : 28,561.53 = 14,386.18 : x
  2. Step 2: Convert to fraction form
    20,684.74/28,561.53 = 14,386.18/x
  3. Step 3: Cross multiply
    20,684.74x = 28,561.53 × 14,386.18
  4. Step 4: Simplify right side
    20,684.74x = 410,891,311.66
  5. Step 5: Solve for x
    x = 410,891,311.66/20,684.74
  6. Step 6: Final answer
    x = 19,864.47

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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.