Home / 15,295.79-21,088.60-9,908.93

Finding the Fourth Proportional to 15,295.79, 21,088.60 and 9,908.93

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Solution

The fourth proportional to 15,295.79, 21,088.60 and 9,908.93 is: 13,661.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,295.79 : 21,088.60 = 9,908.93 : x
  2. Step 2: Convert to fraction form
    15,295.79/21,088.60 = 9,908.93/x
  3. Step 3: Cross multiply
    15,295.79x = 21,088.60 × 9,908.93
  4. Step 4: Simplify right side
    15,295.79x = 208,965,544.88
  5. Step 5: Solve for x
    x = 208,965,544.88/15,295.79
  6. Step 6: Final answer
    x = 13,661.64

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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.