Home / 20,920.07-28,926.54-20,582.10

Finding the Fourth Proportional to 20,920.07, 28,926.54 and 20,582.10

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Solution

The fourth proportional to 20,920.07, 28,926.54 and 20,582.10 is: 28,459.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,920.07 : 28,926.54 = 20,582.10 : x
  2. Step 2: Convert to fraction form
    20,920.07/28,926.54 = 20,582.10/x
  3. Step 3: Cross multiply
    20,920.07x = 28,926.54 × 20,582.10
  4. Step 4: Simplify right side
    20,920.07x = 595,368,938.93
  5. Step 5: Solve for x
    x = 595,368,938.93/20,920.07
  6. Step 6: Final answer
    x = 28,459.22

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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.