Home / 42,220.08-63,288.36-19,994.40

Finding the Fourth Proportional to 42,220.08, 63,288.36 and 19,994.40

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Solution

The fourth proportional to 42,220.08, 63,288.36 and 19,994.40 is: 29,971.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,220.08 : 63,288.36 = 19,994.40 : x
  2. Step 2: Convert to fraction form
    42,220.08/63,288.36 = 19,994.40/x
  3. Step 3: Cross multiply
    42,220.08x = 63,288.36 × 19,994.40
  4. Step 4: Simplify right side
    42,220.08x = 1,265,412,785.18
  5. Step 5: Solve for x
    x = 1,265,412,785.18/42,220.08
  6. Step 6: Final answer
    x = 29,971.82

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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.