Home / 15,360.18-21,199.10-8,647.13

Finding the Fourth Proportional to 15,360.18, 21,199.10 and 8,647.13

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Solution

The fourth proportional to 15,360.18, 21,199.10 and 8,647.13 is: 11,934.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,360.18 : 21,199.10 = 8,647.13 : x
  2. Step 2: Convert to fraction form
    15,360.18/21,199.10 = 8,647.13/x
  3. Step 3: Cross multiply
    15,360.18x = 21,199.10 × 8,647.13
  4. Step 4: Simplify right side
    15,360.18x = 183,311,224.35
  5. Step 5: Solve for x
    x = 183,311,224.35/15,360.18
  6. Step 6: Final answer
    x = 11,934.18

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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.