Home / 28,980.40-43,446.30-15,129.40

Finding the Fourth Proportional to 28,980.40, 43,446.30 and 15,129.40

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Solution

The fourth proportional to 28,980.40, 43,446.30 and 15,129.40 is: 22,681.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,980.40 : 43,446.30 = 15,129.40 : x
  2. Step 2: Convert to fraction form
    28,980.40/43,446.30 = 15,129.40/x
  3. Step 3: Cross multiply
    28,980.40x = 43,446.30 × 15,129.40
  4. Step 4: Simplify right side
    28,980.40x = 657,316,451.22
  5. Step 5: Solve for x
    x = 657,316,451.22/28,980.40
  6. Step 6: Final answer
    x = 22,681.41

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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.