Home / 30,971.43-42,750.63-18,223.92

Finding the Fourth Proportional to 30,971.43, 42,750.63 and 18,223.92

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Solution

The fourth proportional to 30,971.43, 42,750.63 and 18,223.92 is: 25,154.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,971.43 : 42,750.63 = 18,223.92 : x
  2. Step 2: Convert to fraction form
    30,971.43/42,750.63 = 18,223.92/x
  3. Step 3: Cross multiply
    30,971.43x = 42,750.63 × 18,223.92
  4. Step 4: Simplify right side
    30,971.43x = 779,084,061.07
  5. Step 5: Solve for x
    x = 779,084,061.07/30,971.43
  6. Step 6: Final answer
    x = 25,154.93

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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.