Home / 15,283.52-21,088.04-9,986.12

Finding the Fourth Proportional to 15,283.52, 21,088.04 and 9,986.12

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Solution

The fourth proportional to 15,283.52, 21,088.04 and 9,986.12 is: 13,778.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,283.52 : 21,088.04 = 9,986.12 : x
  2. Step 2: Convert to fraction form
    15,283.52/21,088.04 = 9,986.12/x
  3. Step 3: Cross multiply
    15,283.52x = 21,088.04 × 9,986.12
  4. Step 4: Simplify right side
    15,283.52x = 210,587,698.00
  5. Step 5: Solve for x
    x = 210,587,698.00/15,283.52
  6. Step 6: Final answer
    x = 13,778.74

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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.