Home / 15,306.37-21,120.29-9,017.89

Finding the Fourth Proportional to 15,306.37, 21,120.29 and 9,017.89

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Solution

The fourth proportional to 15,306.37, 21,120.29 and 9,017.89 is: 12,443.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,306.37 : 21,120.29 = 9,017.89 : x
  2. Step 2: Convert to fraction form
    15,306.37/21,120.29 = 9,017.89/x
  3. Step 3: Cross multiply
    15,306.37x = 21,120.29 × 9,017.89
  4. Step 4: Simplify right side
    15,306.37x = 190,460,406.90
  5. Step 5: Solve for x
    x = 190,460,406.90/15,306.37
  6. Step 6: Final answer
    x = 12,443.21

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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.