Home / 15,360.49-21,191.68-8,985.05

Finding the Fourth Proportional to 15,360.49, 21,191.68 and 8,985.05

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Solution

The fourth proportional to 15,360.49, 21,191.68 and 8,985.05 is: 12,395.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,360.49 : 21,191.68 = 8,985.05 : x
  2. Step 2: Convert to fraction form
    15,360.49/21,191.68 = 8,985.05/x
  3. Step 3: Cross multiply
    15,360.49x = 21,191.68 × 8,985.05
  4. Step 4: Simplify right side
    15,360.49x = 190,408,153.50
  5. Step 5: Solve for x
    x = 190,408,153.50/15,360.49
  6. Step 6: Final answer
    x = 12,395.97

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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.