Home / 15,653.35-21,603.84-9,686.94

Finding the Fourth Proportional to 15,653.35, 21,603.84 and 9,686.94

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Solution

The fourth proportional to 15,653.35, 21,603.84 and 9,686.94 is: 13,369.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,653.35 : 21,603.84 = 9,686.94 : x
  2. Step 2: Convert to fraction form
    15,653.35/21,603.84 = 9,686.94/x
  3. Step 3: Cross multiply
    15,653.35x = 21,603.84 × 9,686.94
  4. Step 4: Simplify right side
    15,653.35x = 209,275,133.28
  5. Step 5: Solve for x
    x = 209,275,133.28/15,653.35
  6. Step 6: Final answer
    x = 13,369.35

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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.