Home / 10,065.40-13,891.13-5,590.02

Finding the Fourth Proportional to 10,065.40, 13,891.13 and 5,590.02

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Solution

The fourth proportional to 10,065.40, 13,891.13 and 5,590.02 is: 7,714.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,065.40 : 13,891.13 = 5,590.02 : x
  2. Step 2: Convert to fraction form
    10,065.40/13,891.13 = 5,590.02/x
  3. Step 3: Cross multiply
    10,065.40x = 13,891.13 × 5,590.02
  4. Step 4: Simplify right side
    10,065.40x = 77,651,739.63
  5. Step 5: Solve for x
    x = 77,651,739.63/10,065.40
  6. Step 6: Final answer
    x = 7,714.72

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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.