Home / 30,521.00-42,090.86-20,943.99

Finding the Fourth Proportional to 30,521.00, 42,090.86 and 20,943.99

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Solution

The fourth proportional to 30,521.00, 42,090.86 and 20,943.99 is: 28,883.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,521.00 : 42,090.86 = 20,943.99 : x
  2. Step 2: Convert to fraction form
    30,521.00/42,090.86 = 20,943.99/x
  3. Step 3: Cross multiply
    30,521.00x = 42,090.86 × 20,943.99
  4. Step 4: Simplify right side
    30,521.00x = 881,550,603.29
  5. Step 5: Solve for x
    x = 881,550,603.29/30,521.00
  6. Step 6: Final answer
    x = 28,883.41

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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.