Home / 22,455.72-30,988.80-12,384.32

Finding the Fourth Proportional to 22,455.72, 30,988.80 and 12,384.32

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Solution

The fourth proportional to 22,455.72, 30,988.80 and 12,384.32 is: 17,090.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,455.72 : 30,988.80 = 12,384.32 : x
  2. Step 2: Convert to fraction form
    22,455.72/30,988.80 = 12,384.32/x
  3. Step 3: Cross multiply
    22,455.72x = 30,988.80 × 12,384.32
  4. Step 4: Simplify right side
    22,455.72x = 383,775,060.67
  5. Step 5: Solve for x
    x = 383,775,060.67/22,455.72
  6. Step 6: Final answer
    x = 17,090.30

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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.