Home / 19,881.56-29,761.32-12,460.16

Finding the Fourth Proportional to 19,881.56, 29,761.32 and 12,460.16

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Solution

The fourth proportional to 19,881.56, 29,761.32 and 12,460.16 is: 18,652.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,881.56 : 29,761.32 = 12,460.16 : x
  2. Step 2: Convert to fraction form
    19,881.56/29,761.32 = 12,460.16/x
  3. Step 3: Cross multiply
    19,881.56x = 29,761.32 × 12,460.16
  4. Step 4: Simplify right side
    19,881.56x = 370,830,809.01
  5. Step 5: Solve for x
    x = 370,830,809.01/19,881.56
  6. Step 6: Final answer
    x = 18,652.00

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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.