Home / 21,973.12-30,320.47-12,411.99

Finding the Fourth Proportional to 21,973.12, 30,320.47 and 12,411.99

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Solution

The fourth proportional to 21,973.12, 30,320.47 and 12,411.99 is: 17,127.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,973.12 : 30,320.47 = 12,411.99 : x
  2. Step 2: Convert to fraction form
    21,973.12/30,320.47 = 12,411.99/x
  3. Step 3: Cross multiply
    21,973.12x = 30,320.47 × 12,411.99
  4. Step 4: Simplify right side
    21,973.12x = 376,337,370.44
  5. Step 5: Solve for x
    x = 376,337,370.44/21,973.12
  6. Step 6: Final answer
    x = 17,127.17

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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.