Home / 15,603.12-21,530.88-8,886.96

Finding the Fourth Proportional to 15,603.12, 21,530.88 and 8,886.96

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Solution

The fourth proportional to 15,603.12, 21,530.88 and 8,886.96 is: 12,263.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,603.12 : 21,530.88 = 8,886.96 : x
  2. Step 2: Convert to fraction form
    15,603.12/21,530.88 = 8,886.96/x
  3. Step 3: Cross multiply
    15,603.12x = 21,530.88 × 8,886.96
  4. Step 4: Simplify right side
    15,603.12x = 191,344,069.32
  5. Step 5: Solve for x
    x = 191,344,069.32/15,603.12
  6. Step 6: Final answer
    x = 12,263.19

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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.