Home / 39,213.84-54,114.93-21,308.52

Finding the Fourth Proportional to 39,213.84, 54,114.93 and 21,308.52

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Solution

The fourth proportional to 39,213.84, 54,114.93 and 21,308.52 is: 29,405.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,213.84 : 54,114.93 = 21,308.52 : x
  2. Step 2: Convert to fraction form
    39,213.84/54,114.93 = 21,308.52/x
  3. Step 3: Cross multiply
    39,213.84x = 54,114.93 × 21,308.52
  4. Step 4: Simplify right side
    39,213.84x = 1,153,109,068.20
  5. Step 5: Solve for x
    x = 1,153,109,068.20/39,213.84
  6. Step 6: Final answer
    x = 29,405.67

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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.