Home / 15,746.96-21,686.85-13,069.77

Finding the Fourth Proportional to 15,746.96, 21,686.85 and 13,069.77

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Solution

The fourth proportional to 15,746.96, 21,686.85 and 13,069.77 is: 17,999.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,746.96 : 21,686.85 = 13,069.77 : x
  2. Step 2: Convert to fraction form
    15,746.96/21,686.85 = 13,069.77/x
  3. Step 3: Cross multiply
    15,746.96x = 21,686.85 × 13,069.77
  4. Step 4: Simplify right side
    15,746.96x = 283,442,141.52
  5. Step 5: Solve for x
    x = 283,442,141.52/15,746.96
  6. Step 6: Final answer
    x = 17,999.81

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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.