Home / 30,643.76-42,260.29-19,877.41

Finding the Fourth Proportional to 30,643.76, 42,260.29 and 19,877.41

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Solution

The fourth proportional to 30,643.76, 42,260.29 and 19,877.41 is: 27,412.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,643.76 : 42,260.29 = 19,877.41 : x
  2. Step 2: Convert to fraction form
    30,643.76/42,260.29 = 19,877.41/x
  3. Step 3: Cross multiply
    30,643.76x = 42,260.29 × 19,877.41
  4. Step 4: Simplify right side
    30,643.76x = 840,025,111.05
  5. Step 5: Solve for x
    x = 840,025,111.05/30,643.76
  6. Step 6: Final answer
    x = 27,412.60

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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.