Home / 38,421.03-53,021.22-21,426.30

Finding the Fourth Proportional to 38,421.03, 53,021.22 and 21,426.30

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Solution

The fourth proportional to 38,421.03, 53,021.22 and 21,426.30 is: 29,568.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,421.03 : 53,021.22 = 21,426.30 : x
  2. Step 2: Convert to fraction form
    38,421.03/53,021.22 = 21,426.30/x
  3. Step 3: Cross multiply
    38,421.03x = 53,021.22 × 21,426.30
  4. Step 4: Simplify right side
    38,421.03x = 1,136,048,566.09
  5. Step 5: Solve for x
    x = 1,136,048,566.09/38,421.03
  6. Step 6: Final answer
    x = 29,568.40

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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.