Home / 15,645.12-21,590.58-9,676.68

Finding the Fourth Proportional to 15,645.12, 21,590.58 and 9,676.68

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Solution

The fourth proportional to 15,645.12, 21,590.58 and 9,676.68 is: 13,354.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,645.12 : 21,590.58 = 9,676.68 : x
  2. Step 2: Convert to fraction form
    15,645.12/21,590.58 = 9,676.68/x
  3. Step 3: Cross multiply
    15,645.12x = 21,590.58 × 9,676.68
  4. Step 4: Simplify right side
    15,645.12x = 208,925,133.67
  5. Step 5: Solve for x
    x = 208,925,133.67/15,645.12
  6. Step 6: Final answer
    x = 13,354.01

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Half scale
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Double scale
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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.