Home / 21,989.36-30,341.04-17,790.32

Finding the Fourth Proportional to 21,989.36, 30,341.04 and 17,790.32

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Solution

The fourth proportional to 21,989.36, 30,341.04 and 17,790.32 is: 24,547.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,989.36 : 30,341.04 = 17,790.32 : x
  2. Step 2: Convert to fraction form
    21,989.36/30,341.04 = 17,790.32/x
  3. Step 3: Cross multiply
    21,989.36x = 30,341.04 × 17,790.32
  4. Step 4: Simplify right side
    21,989.36x = 539,776,810.73
  5. Step 5: Solve for x
    x = 539,776,810.73/21,989.36
  6. Step 6: Final answer
    x = 24,547.18

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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.