Home / 15,665.55-21,626.78-10,656.51

Finding the Fourth Proportional to 15,665.55, 21,626.78 and 10,656.51

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Solution

The fourth proportional to 15,665.55, 21,626.78 and 10,656.51 is: 14,711.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,665.55 : 21,626.78 = 10,656.51 : x
  2. Step 2: Convert to fraction form
    15,665.55/21,626.78 = 10,656.51/x
  3. Step 3: Cross multiply
    15,665.55x = 21,626.78 × 10,656.51
  4. Step 4: Simplify right side
    15,665.55x = 230,465,944.06
  5. Step 5: Solve for x
    x = 230,465,944.06/15,665.55
  6. Step 6: Final answer
    x = 14,711.64

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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.