Home / 28,870.52-43,272.95-12,220.16

Finding the Fourth Proportional to 28,870.52, 43,272.95 and 12,220.16

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Solution

The fourth proportional to 28,870.52, 43,272.95 and 12,220.16 is: 18,316.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,870.52 : 43,272.95 = 12,220.16 : x
  2. Step 2: Convert to fraction form
    28,870.52/43,272.95 = 12,220.16/x
  3. Step 3: Cross multiply
    28,870.52x = 43,272.95 × 12,220.16
  4. Step 4: Simplify right side
    28,870.52x = 528,802,095.21
  5. Step 5: Solve for x
    x = 528,802,095.21/28,870.52
  6. Step 6: Final answer
    x = 18,316.34

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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.