Home / 30,435.04-45,652.56-19,971.28

Finding the Fourth Proportional to 30,435.04, 45,652.56 and 19,971.28

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Solution

The fourth proportional to 30,435.04, 45,652.56 and 19,971.28 is: 29,956.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,435.04 : 45,652.56 = 19,971.28 : x
  2. Step 2: Convert to fraction form
    30,435.04/45,652.56 = 19,971.28/x
  3. Step 3: Cross multiply
    30,435.04x = 45,652.56 × 19,971.28
  4. Step 4: Simplify right side
    30,435.04x = 911,739,896.19
  5. Step 5: Solve for x
    x = 911,739,896.19/30,435.04
  6. Step 6: Final answer
    x = 29,956.91

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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.