Home / 39,420.05-54,397.32-22,421.84

Finding the Fourth Proportional to 39,420.05, 54,397.32 and 22,421.84

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Solution

The fourth proportional to 39,420.05, 54,397.32 and 22,421.84 is: 30,940.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,420.05 : 54,397.32 = 22,421.84 : x
  2. Step 2: Convert to fraction form
    39,420.05/54,397.32 = 22,421.84/x
  3. Step 3: Cross multiply
    39,420.05x = 54,397.32 × 22,421.84
  4. Step 4: Simplify right side
    39,420.05x = 1,219,688,005.47
  5. Step 5: Solve for x
    x = 1,219,688,005.47/39,420.05
  6. Step 6: Final answer
    x = 30,940.80

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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.