Home / 15,657.48-21,618-11,625.30

Finding the Fourth Proportional to 15,657.48, 21,618 and 11,625.30

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Solution

The fourth proportional to 15,657.48, 21,618 and 11,625.30 is: 16,050.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,657.48 : 21,618 = 11,625.30 : x
  2. Step 2: Convert to fraction form
    15,657.48/21,618 = 11,625.30/x
  3. Step 3: Cross multiply
    15,657.48x = 21,618 × 11,625.30
  4. Step 4: Simplify right side
    15,657.48x = 251,315,735.40
  5. Step 5: Solve for x
    x = 251,315,735.40/15,657.48
  6. Step 6: Final answer
    x = 16,050.84

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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.