Home / 28,107.12-42,159.71-7,047.35

Finding the Fourth Proportional to 28,107.12, 42,159.71 and 7,047.35

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Solution

The fourth proportional to 28,107.12, 42,159.71 and 7,047.35 is: 10,570.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,107.12 : 42,159.71 = 7,047.35 : x
  2. Step 2: Convert to fraction form
    28,107.12/42,159.71 = 7,047.35/x
  3. Step 3: Cross multiply
    28,107.12x = 42,159.71 × 7,047.35
  4. Step 4: Simplify right side
    28,107.12x = 297,113,986.23
  5. Step 5: Solve for x
    x = 297,113,986.23/28,107.12
  6. Step 6: Final answer
    x = 10,570.77

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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.