Home / 13,429.77-18,530.10-8,124.48

Finding the Fourth Proportional to 13,429.77, 18,530.10 and 8,124.48

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Solution

The fourth proportional to 13,429.77, 18,530.10 and 8,124.48 is: 11,209.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,429.77 : 18,530.10 = 8,124.48 : x
  2. Step 2: Convert to fraction form
    13,429.77/18,530.10 = 8,124.48/x
  3. Step 3: Cross multiply
    13,429.77x = 18,530.10 × 8,124.48
  4. Step 4: Simplify right side
    13,429.77x = 150,547,426.85
  5. Step 5: Solve for x
    x = 150,547,426.85/13,429.77
  6. Step 6: Final answer
    x = 11,209.98

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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.