Home / 30,329.81-45,518.51-21,035.06

Finding the Fourth Proportional to 30,329.81, 45,518.51 and 21,035.06

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Solution

The fourth proportional to 30,329.81, 45,518.51 and 21,035.06 is: 31,569.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,329.81 : 45,518.51 = 21,035.06 : x
  2. Step 2: Convert to fraction form
    30,329.81/45,518.51 = 21,035.06/x
  3. Step 3: Cross multiply
    30,329.81x = 45,518.51 × 21,035.06
  4. Step 4: Simplify right side
    30,329.81x = 957,484,588.96
  5. Step 5: Solve for x
    x = 957,484,588.96/30,329.81
  6. Step 6: Final answer
    x = 31,569.09

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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.