Home / 28,011.19-42,019.86-11,368.80

Finding the Fourth Proportional to 28,011.19, 42,019.86 and 11,368.80

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Solution

The fourth proportional to 28,011.19, 42,019.86 and 11,368.80 is: 17,054.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011.19 : 42,019.86 = 11,368.80 : x
  2. Step 2: Convert to fraction form
    28,011.19/42,019.86 = 11,368.80/x
  3. Step 3: Cross multiply
    28,011.19x = 42,019.86 × 11,368.80
  4. Step 4: Simplify right side
    28,011.19x = 477,715,327.52
  5. Step 5: Solve for x
    x = 477,715,327.52/28,011.19
  6. Step 6: Final answer
    x = 17,054.45

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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.