Home / 15,603.40-21,534.66-8,888.68

Finding the Fourth Proportional to 15,603.40, 21,534.66 and 8,888.68

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Solution

The fourth proportional to 15,603.40, 21,534.66 and 8,888.68 is: 12,267.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,603.40 : 21,534.66 = 8,888.68 : x
  2. Step 2: Convert to fraction form
    15,603.40/21,534.66 = 8,888.68/x
  3. Step 3: Cross multiply
    15,603.40x = 21,534.66 × 8,888.68
  4. Step 4: Simplify right side
    15,603.40x = 191,414,701.65
  5. Step 5: Solve for x
    x = 191,414,701.65/15,603.40
  6. Step 6: Final answer
    x = 12,267.50

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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.