Home / 13,985.96-21,055.50-12,761.24

Finding the Fourth Proportional to 13,985.96, 21,055.50 and 12,761.24

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Solution

The fourth proportional to 13,985.96, 21,055.50 and 12,761.24 is: 19,211.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,985.96 : 21,055.50 = 12,761.24 : x
  2. Step 2: Convert to fraction form
    13,985.96/21,055.50 = 12,761.24/x
  3. Step 3: Cross multiply
    13,985.96x = 21,055.50 × 12,761.24
  4. Step 4: Simplify right side
    13,985.96x = 268,694,341.46
  5. Step 5: Solve for x
    x = 268,694,341.46/13,985.96
  6. Step 6: Final answer
    x = 19,211.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.