Home / 21,995.24-30,312.74-15,622.12

Finding the Fourth Proportional to 21,995.24, 30,312.74 and 15,622.12

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Solution

The fourth proportional to 21,995.24, 30,312.74 and 15,622.12 is: 21,529.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,995.24 : 30,312.74 = 15,622.12 : x
  2. Step 2: Convert to fraction form
    21,995.24/30,312.74 = 15,622.12/x
  3. Step 3: Cross multiply
    21,995.24x = 30,312.74 × 15,622.12
  4. Step 4: Simplify right side
    21,995.24x = 473,549,032.13
  5. Step 5: Solve for x
    x = 473,549,032.13/21,995.24
  6. Step 6: Final answer
    x = 21,529.61

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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.