Home / 20,718.48-28,582.40-14,001.66

Finding the Fourth Proportional to 20,718.48, 28,582.40 and 14,001.66

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Solution

The fourth proportional to 20,718.48, 28,582.40 and 14,001.66 is: 19,316.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718.48 : 28,582.40 = 14,001.66 : x
  2. Step 2: Convert to fraction form
    20,718.48/28,582.40 = 14,001.66/x
  3. Step 3: Cross multiply
    20,718.48x = 28,582.40 × 14,001.66
  4. Step 4: Simplify right side
    20,718.48x = 400,200,976.78
  5. Step 5: Solve for x
    x = 400,200,976.78/20,718.48
  6. Step 6: Final answer
    x = 19,316.14

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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.