Home / 28,920.50-43,331.18-19,415.02

Finding the Fourth Proportional to 28,920.50, 43,331.18 and 19,415.02

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Solution

The fourth proportional to 28,920.50, 43,331.18 and 19,415.02 is: 29,089.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,920.50 : 43,331.18 = 19,415.02 : x
  2. Step 2: Convert to fraction form
    28,920.50/43,331.18 = 19,415.02/x
  3. Step 3: Cross multiply
    28,920.50x = 43,331.18 × 19,415.02
  4. Step 4: Simplify right side
    28,920.50x = 841,275,726.32
  5. Step 5: Solve for x
    x = 841,275,726.32/28,920.50
  6. Step 6: Final answer
    x = 29,089.25

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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.