Home / 15,696.68-21,635.40-15,281.16

Finding the Fourth Proportional to 15,696.68, 21,635.40 and 15,281.16

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Solution

The fourth proportional to 15,696.68, 21,635.40 and 15,281.16 is: 21,062.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,696.68 : 21,635.40 = 15,281.16 : x
  2. Step 2: Convert to fraction form
    15,696.68/21,635.40 = 15,281.16/x
  3. Step 3: Cross multiply
    15,696.68x = 21,635.40 × 15,281.16
  4. Step 4: Simplify right side
    15,696.68x = 330,614,009.06
  5. Step 5: Solve for x
    x = 330,614,009.06/15,696.68
  6. Step 6: Final answer
    x = 21,062.67

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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.