Home / 13,402.60-18,486.42-8,088.28

Finding the Fourth Proportional to 13,402.60, 18,486.42 and 8,088.28

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Solution

The fourth proportional to 13,402.60, 18,486.42 and 8,088.28 is: 11,156.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,402.60 : 18,486.42 = 8,088.28 : x
  2. Step 2: Convert to fraction form
    13,402.60/18,486.42 = 8,088.28/x
  3. Step 3: Cross multiply
    13,402.60x = 18,486.42 × 8,088.28
  4. Step 4: Simplify right side
    13,402.60x = 149,523,341.16
  5. Step 5: Solve for x
    x = 149,523,341.16/13,402.60
  6. Step 6: Final answer
    x = 11,156.29

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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.