Home / 21,088.76-31,637.84-7,941.24

Finding the Fourth Proportional to 21,088.76, 31,637.84 and 7,941.24

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Solution

The fourth proportional to 21,088.76, 31,637.84 and 7,941.24 is: 11,913.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,088.76 : 31,637.84 = 7,941.24 : x
  2. Step 2: Convert to fraction form
    21,088.76/31,637.84 = 7,941.24/x
  3. Step 3: Cross multiply
    21,088.76x = 31,637.84 × 7,941.24
  4. Step 4: Simplify right side
    21,088.76x = 251,243,685.48
  5. Step 5: Solve for x
    x = 251,243,685.48/21,088.76
  6. Step 6: Final answer
    x = 11,913.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.