Home / 13,533.29-18,681.13-12,114.48

Finding the Fourth Proportional to 13,533.29, 18,681.13 and 12,114.48

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Solution

The fourth proportional to 13,533.29, 18,681.13 and 12,114.48 is: 16,722.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,533.29 : 18,681.13 = 12,114.48 : x
  2. Step 2: Convert to fraction form
    13,533.29/18,681.13 = 12,114.48/x
  3. Step 3: Cross multiply
    13,533.29x = 18,681.13 × 12,114.48
  4. Step 4: Simplify right side
    13,533.29x = 226,312,155.88
  5. Step 5: Solve for x
    x = 226,312,155.88/13,533.29
  6. Step 6: Final answer
    x = 16,722.62

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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.