Home / 39,293.28-54,225.78-21,389.49

Finding the Fourth Proportional to 39,293.28, 54,225.78 and 21,389.49

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Solution

The fourth proportional to 39,293.28, 54,225.78 and 21,389.49 is: 29,518.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,293.28 : 54,225.78 = 21,389.49 : x
  2. Step 2: Convert to fraction form
    39,293.28/54,225.78 = 21,389.49/x
  3. Step 3: Cross multiply
    39,293.28x = 54,225.78 × 21,389.49
  4. Step 4: Simplify right side
    39,293.28x = 1,159,861,779.05
  5. Step 5: Solve for x
    x = 1,159,861,779.05/39,293.28
  6. Step 6: Final answer
    x = 29,518.07

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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.