Home / 20,388.51-30,582.75-13,461.39

Finding the Fourth Proportional to 20,388.51, 30,582.75 and 13,461.39

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Solution

The fourth proportional to 20,388.51, 30,582.75 and 13,461.39 is: 20,192.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,388.51 : 30,582.75 = 13,461.39 : x
  2. Step 2: Convert to fraction form
    20,388.51/30,582.75 = 13,461.39/x
  3. Step 3: Cross multiply
    20,388.51x = 30,582.75 × 13,461.39
  4. Step 4: Simplify right side
    20,388.51x = 411,686,325.02
  5. Step 5: Solve for x
    x = 411,686,325.02/20,388.51
  6. Step 6: Final answer
    x = 20,192.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.