Home / 38,220.40-52,742.64-21,225.52

Finding the Fourth Proportional to 38,220.40, 52,742.64 and 21,225.52

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Solution

The fourth proportional to 38,220.40, 52,742.64 and 21,225.52 is: 29,290.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,220.40 : 52,742.64 = 21,225.52 : x
  2. Step 2: Convert to fraction form
    38,220.40/52,742.64 = 21,225.52/x
  3. Step 3: Cross multiply
    38,220.40x = 52,742.64 × 21,225.52
  4. Step 4: Simplify right side
    38,220.40x = 1,119,489,960.17
  5. Step 5: Solve for x
    x = 1,119,489,960.17/38,220.40
  6. Step 6: Final answer
    x = 29,290.38

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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.