Home / 13,421.56-18,523.77-9,657.19

Finding the Fourth Proportional to 13,421.56, 18,523.77 and 9,657.19

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Solution

The fourth proportional to 13,421.56, 18,523.77 and 9,657.19 is: 13,328.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.56 : 18,523.77 = 9,657.19 : x
  2. Step 2: Convert to fraction form
    13,421.56/18,523.77 = 9,657.19/x
  3. Step 3: Cross multiply
    13,421.56x = 18,523.77 × 9,657.19
  4. Step 4: Simplify right side
    13,421.56x = 178,887,503.47
  5. Step 5: Solve for x
    x = 178,887,503.47/13,421.56
  6. Step 6: Final answer
    x = 13,328.37

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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.