Home / 15,559.93-21,455.69-10,515.41

Finding the Fourth Proportional to 15,559.93, 21,455.69 and 10,515.41

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Solution

The fourth proportional to 15,559.93, 21,455.69 and 10,515.41 is: 14,499.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,559.93 : 21,455.69 = 10,515.41 : x
  2. Step 2: Convert to fraction form
    15,559.93/21,455.69 = 10,515.41/x
  3. Step 3: Cross multiply
    15,559.93x = 21,455.69 × 10,515.41
  4. Step 4: Simplify right side
    15,559.93x = 225,615,296.19
  5. Step 5: Solve for x
    x = 225,615,296.19/15,559.93
  6. Step 6: Final answer
    x = 14,499.77

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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.