Home / 15,564.00-21,477.85-8,758.40

Finding the Fourth Proportional to 15,564.00, 21,477.85 and 8,758.40

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Solution

The fourth proportional to 15,564.00, 21,477.85 and 8,758.40 is: 12,086.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,564.00 : 21,477.85 = 8,758.40 : x
  2. Step 2: Convert to fraction form
    15,564.00/21,477.85 = 8,758.40/x
  3. Step 3: Cross multiply
    15,564.00x = 21,477.85 × 8,758.40
  4. Step 4: Simplify right side
    15,564.00x = 188,111,702.64
  5. Step 5: Solve for x
    x = 188,111,702.64/15,564.00
  6. Step 6: Final answer
    x = 12,086.33

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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.