Home / 30,431.01-45,670.06-19,898.18

Finding the Fourth Proportional to 30,431.01, 45,670.06 and 19,898.18

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Solution

The fourth proportional to 30,431.01, 45,670.06 and 19,898.18 is: 29,862.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,431.01 : 45,670.06 = 19,898.18 : x
  2. Step 2: Convert to fraction form
    30,431.01/45,670.06 = 19,898.18/x
  3. Step 3: Cross multiply
    30,431.01x = 45,670.06 × 19,898.18
  4. Step 4: Simplify right side
    30,431.01x = 908,750,746.65
  5. Step 5: Solve for x
    x = 908,750,746.65/30,431.01
  6. Step 6: Final answer
    x = 29,862.65

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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.