Home / 21,925.67-30,255.26-13,430.21

Finding the Fourth Proportional to 21,925.67, 30,255.26 and 13,430.21

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Solution

The fourth proportional to 21,925.67, 30,255.26 and 13,430.21 is: 18,532.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,925.67 : 30,255.26 = 13,430.21 : x
  2. Step 2: Convert to fraction form
    21,925.67/30,255.26 = 13,430.21/x
  3. Step 3: Cross multiply
    21,925.67x = 30,255.26 × 13,430.21
  4. Step 4: Simplify right side
    21,925.67x = 406,334,276.98
  5. Step 5: Solve for x
    x = 406,334,276.98/21,925.67
  6. Step 6: Final answer
    x = 18,532.36

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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.