Home / 15,317.84-21,137.52-8,603.12

Finding the Fourth Proportional to 15,317.84, 21,137.52 and 8,603.12

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Solution

The fourth proportional to 15,317.84, 21,137.52 and 8,603.12 is: 11,871.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,317.84 : 21,137.52 = 8,603.12 : x
  2. Step 2: Convert to fraction form
    15,317.84/21,137.52 = 8,603.12/x
  3. Step 3: Cross multiply
    15,317.84x = 21,137.52 × 8,603.12
  4. Step 4: Simplify right side
    15,317.84x = 181,848,621.06
  5. Step 5: Solve for x
    x = 181,848,621.06/15,317.84
  6. Step 6: Final answer
    x = 11,871.69

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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.