Home / 15,368.86-21,211.84-8,995.08

Finding the Fourth Proportional to 15,368.86, 21,211.84 and 8,995.08

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Solution

The fourth proportional to 15,368.86, 21,211.84 and 8,995.08 is: 12,414.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,368.86 : 21,211.84 = 8,995.08 : x
  2. Step 2: Convert to fraction form
    15,368.86/21,211.84 = 8,995.08/x
  3. Step 3: Cross multiply
    15,368.86x = 21,211.84 × 8,995.08
  4. Step 4: Simplify right side
    15,368.86x = 190,802,197.75
  5. Step 5: Solve for x
    x = 190,802,197.75/15,368.86
  6. Step 6: Final answer
    x = 12,414.86

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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.