Home / 28,563.96-39,430.62-21,492.12

Finding the Fourth Proportional to 28,563.96, 39,430.62 and 21,492.12

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Solution

The fourth proportional to 28,563.96, 39,430.62 and 21,492.12 is: 29,668.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,563.96 : 39,430.62 = 21,492.12 : x
  2. Step 2: Convert to fraction form
    28,563.96/39,430.62 = 21,492.12/x
  3. Step 3: Cross multiply
    28,563.96x = 39,430.62 × 21,492.12
  4. Step 4: Simplify right side
    28,563.96x = 847,447,616.71
  5. Step 5: Solve for x
    x = 847,447,616.71/28,563.96
  6. Step 6: Final answer
    x = 29,668.42

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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.