Home / 23,090.64-31,864.86-12,881.76

Finding the Fourth Proportional to 23,090.64, 31,864.86 and 12,881.76

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Solution

The fourth proportional to 23,090.64, 31,864.86 and 12,881.76 is: 17,776.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,090.64 : 31,864.86 = 12,881.76 : x
  2. Step 2: Convert to fraction form
    23,090.64/31,864.86 = 12,881.76/x
  3. Step 3: Cross multiply
    23,090.64x = 31,864.86 × 12,881.76
  4. Step 4: Simplify right side
    23,090.64x = 410,475,478.95
  5. Step 5: Solve for x
    x = 410,475,478.95/23,090.64
  6. Step 6: Final answer
    x = 17,776.70

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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.