Home / 13,518.84-18,657.36-8,214.18

Finding the Fourth Proportional to 13,518.84, 18,657.36 and 8,214.18

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Solution

The fourth proportional to 13,518.84, 18,657.36 and 8,214.18 is: 11,336.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.84 : 18,657.36 = 8,214.18 : x
  2. Step 2: Convert to fraction form
    13,518.84/18,657.36 = 8,214.18/x
  3. Step 3: Cross multiply
    13,518.84x = 18,657.36 × 8,214.18
  4. Step 4: Simplify right side
    13,518.84x = 153,254,913.36
  5. Step 5: Solve for x
    x = 153,254,913.36/13,518.84
  6. Step 6: Final answer
    x = 11,336.40

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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.