Home / 15,322.35-21,152.91-10,312.90

Finding the Fourth Proportional to 15,322.35, 21,152.91 and 10,312.90

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Solution

The fourth proportional to 15,322.35, 21,152.91 and 10,312.90 is: 14,237.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,322.35 : 21,152.91 = 10,312.90 : x
  2. Step 2: Convert to fraction form
    15,322.35/21,152.91 = 10,312.90/x
  3. Step 3: Cross multiply
    15,322.35x = 21,152.91 × 10,312.90
  4. Step 4: Simplify right side
    15,322.35x = 218,147,845.54
  5. Step 5: Solve for x
    x = 218,147,845.54/15,322.35
  6. Step 6: Final answer
    x = 14,237.23

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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.