Home / 28,222.08-42,347.58-12,438.12

Finding the Fourth Proportional to 28,222.08, 42,347.58 and 12,438.12

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Solution

The fourth proportional to 28,222.08, 42,347.58 and 12,438.12 is: 18,663.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,222.08 : 42,347.58 = 12,438.12 : x
  2. Step 2: Convert to fraction form
    28,222.08/42,347.58 = 12,438.12/x
  3. Step 3: Cross multiply
    28,222.08x = 42,347.58 × 12,438.12
  4. Step 4: Simplify right side
    28,222.08x = 526,724,281.75
  5. Step 5: Solve for x
    x = 526,724,281.75/28,222.08
  6. Step 6: Final answer
    x = 18,663.55

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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.