Home / 13,503.48-18,648.16-8,790.50

Finding the Fourth Proportional to 13,503.48, 18,648.16 and 8,790.50

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Solution

The fourth proportional to 13,503.48, 18,648.16 and 8,790.50 is: 12,139.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,503.48 : 18,648.16 = 8,790.50 : x
  2. Step 2: Convert to fraction form
    13,503.48/18,648.16 = 8,790.50/x
  3. Step 3: Cross multiply
    13,503.48x = 18,648.16 × 8,790.50
  4. Step 4: Simplify right side
    13,503.48x = 163,926,650.48
  5. Step 5: Solve for x
    x = 163,926,650.48/13,503.48
  6. Step 6: Final answer
    x = 12,139.59

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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.