Home / 28,707.12-39,618-16,133.76

Finding the Fourth Proportional to 28,707.12, 39,618 and 16,133.76

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Solution

The fourth proportional to 28,707.12, 39,618 and 16,133.76 is: 22,265.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,707.12 : 39,618 = 16,133.76 : x
  2. Step 2: Convert to fraction form
    28,707.12/39,618 = 16,133.76/x
  3. Step 3: Cross multiply
    28,707.12x = 39,618 × 16,133.76
  4. Step 4: Simplify right side
    28,707.12x = 639,187,303.68
  5. Step 5: Solve for x
    x = 639,187,303.68/28,707.12
  6. Step 6: Final answer
    x = 22,265.81

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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.