Home / 13,387.61-18,451.85-8,903.35

Finding the Fourth Proportional to 13,387.61, 18,451.85 and 8,903.35

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Solution

The fourth proportional to 13,387.61, 18,451.85 and 8,903.35 is: 12,271.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.61 : 18,451.85 = 8,903.35 : x
  2. Step 2: Convert to fraction form
    13,387.61/18,451.85 = 8,903.35/x
  3. Step 3: Cross multiply
    13,387.61x = 18,451.85 × 8,903.35
  4. Step 4: Simplify right side
    13,387.61x = 164,283,257.25
  5. Step 5: Solve for x
    x = 164,283,257.25/13,387.61
  6. Step 6: Final answer
    x = 12,271.29

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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.