Home / 15,485.80-21,360.84-13,595.92

Finding the Fourth Proportional to 15,485.80, 21,360.84 and 13,595.92

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Solution

The fourth proportional to 15,485.80, 21,360.84 and 13,595.92 is: 18,753.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,485.80 : 21,360.84 = 13,595.92 : x
  2. Step 2: Convert to fraction form
    15,485.80/21,360.84 = 13,595.92/x
  3. Step 3: Cross multiply
    15,485.80x = 21,360.84 × 13,595.92
  4. Step 4: Simplify right side
    15,485.80x = 290,420,271.77
  5. Step 5: Solve for x
    x = 290,420,271.77/15,485.80
  6. Step 6: Final answer
    x = 18,753.97

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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.