Home / 13,389.90-18,230.16-13,348.32

Finding the Fourth Proportional to 13,389.90, 18,230.16 and 13,348.32

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Solution

The fourth proportional to 13,389.90, 18,230.16 and 13,348.32 is: 18,173.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,389.90 : 18,230.16 = 13,348.32 : x
  2. Step 2: Convert to fraction form
    13,389.90/18,230.16 = 13,348.32/x
  3. Step 3: Cross multiply
    13,389.90x = 18,230.16 × 13,348.32
  4. Step 4: Simplify right side
    13,389.90x = 243,342,009.33
  5. Step 5: Solve for x
    x = 243,342,009.33/13,389.90
  6. Step 6: Final answer
    x = 18,173.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.