Home / 28,442.12-42,669.84-9,722.32

Finding the Fourth Proportional to 28,442.12, 42,669.84 and 9,722.32

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Solution

The fourth proportional to 28,442.12, 42,669.84 and 9,722.32 is: 14,585.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,442.12 : 42,669.84 = 9,722.32 : x
  2. Step 2: Convert to fraction form
    28,442.12/42,669.84 = 9,722.32/x
  3. Step 3: Cross multiply
    28,442.12x = 42,669.84 × 9,722.32
  4. Step 4: Simplify right side
    28,442.12x = 414,849,838.83
  5. Step 5: Solve for x
    x = 414,849,838.83/28,442.12
  6. Step 6: Final answer
    x = 14,585.76

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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.