Home / 31,803.84-43,882.48-21,598.40

Finding the Fourth Proportional to 31,803.84, 43,882.48 and 21,598.40

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Solution

The fourth proportional to 31,803.84, 43,882.48 and 21,598.40 is: 29,801.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,803.84 : 43,882.48 = 21,598.40 : x
  2. Step 2: Convert to fraction form
    31,803.84/43,882.48 = 21,598.40/x
  3. Step 3: Cross multiply
    31,803.84x = 43,882.48 × 21,598.40
  4. Step 4: Simplify right side
    31,803.84x = 947,791,356.03
  5. Step 5: Solve for x
    x = 947,791,356.03/31,803.84
  6. Step 6: Final answer
    x = 29,801.16

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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.