Home / 23,181.18-31,990.03-12,570.81

Finding the Fourth Proportional to 23,181.18, 31,990.03 and 12,570.81

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Solution

The fourth proportional to 23,181.18, 31,990.03 and 12,570.81 is: 17,347.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,181.18 : 31,990.03 = 12,570.81 : x
  2. Step 2: Convert to fraction form
    23,181.18/31,990.03 = 12,570.81/x
  3. Step 3: Cross multiply
    23,181.18x = 31,990.03 × 12,570.81
  4. Step 4: Simplify right side
    23,181.18x = 402,140,429.07
  5. Step 5: Solve for x
    x = 402,140,429.07/23,181.18
  6. Step 6: Final answer
    x = 17,347.72

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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.