Home / 13,068.80-19,590.40-11,686.40

Finding the Fourth Proportional to 13,068.80, 19,590.40 and 11,686.40

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Solution

The fourth proportional to 13,068.80, 19,590.40 and 11,686.40 is: 17,518.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,068.80 : 19,590.40 = 11,686.40 : x
  2. Step 2: Convert to fraction form
    13,068.80/19,590.40 = 11,686.40/x
  3. Step 3: Cross multiply
    13,068.80x = 19,590.40 × 11,686.40
  4. Step 4: Simplify right side
    13,068.80x = 228,941,250.56
  5. Step 5: Solve for x
    x = 228,941,250.56/13,068.80
  6. Step 6: Final answer
    x = 17,518.15

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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.