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Finding the Fourth Proportional to 14,485.64, 19,988.57 and 8,828.60

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Solution

The fourth proportional to 14,485.64, 19,988.57 and 8,828.60 is: 12,182.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,485.64 : 19,988.57 = 8,828.60 : x
  2. Step 2: Convert to fraction form
    14,485.64/19,988.57 = 8,828.60/x
  3. Step 3: Cross multiply
    14,485.64x = 19,988.57 × 8,828.60
  4. Step 4: Simplify right side
    14,485.64x = 176,471,011.23
  5. Step 5: Solve for x
    x = 176,471,011.23/14,485.64
  6. Step 6: Final answer
    x = 12,182.48

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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.