Home / 28,722.06-43,059.80-12,915.52

Finding the Fourth Proportional to 28,722.06, 43,059.80 and 12,915.52

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Solution

The fourth proportional to 28,722.06, 43,059.80 and 12,915.52 is: 19,362.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,722.06 : 43,059.80 = 12,915.52 : x
  2. Step 2: Convert to fraction form
    28,722.06/43,059.80 = 12,915.52/x
  3. Step 3: Cross multiply
    28,722.06x = 43,059.80 × 12,915.52
  4. Step 4: Simplify right side
    28,722.06x = 556,139,632.74
  5. Step 5: Solve for x
    x = 556,139,632.74/28,722.06
  6. Step 6: Final answer
    x = 19,362.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.