Home / 13,530.84-18,666.21-8,222.10

Finding the Fourth Proportional to 13,530.84, 18,666.21 and 8,222.10

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Solution

The fourth proportional to 13,530.84, 18,666.21 and 8,222.10 is: 11,342.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,530.84 : 18,666.21 = 8,222.10 : x
  2. Step 2: Convert to fraction form
    13,530.84/18,666.21 = 8,222.10/x
  3. Step 3: Cross multiply
    13,530.84x = 18,666.21 × 8,222.10
  4. Step 4: Simplify right side
    13,530.84x = 153,475,445.24
  5. Step 5: Solve for x
    x = 153,475,445.24/13,530.84
  6. Step 6: Final answer
    x = 11,342.64

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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.