Home / 42,663.60-63,995.88-13,081.68

Finding the Fourth Proportional to 42,663.60, 63,995.88 and 13,081.68

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Solution

The fourth proportional to 42,663.60, 63,995.88 and 13,081.68 is: 19,622.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,663.60 : 63,995.88 = 13,081.68 : x
  2. Step 2: Convert to fraction form
    42,663.60/63,995.88 = 13,081.68/x
  3. Step 3: Cross multiply
    42,663.60x = 63,995.88 × 13,081.68
  4. Step 4: Simplify right side
    42,663.60x = 837,173,623.48
  5. Step 5: Solve for x
    x = 837,173,623.48/42,663.60
  6. Step 6: Final answer
    x = 19,622.67

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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.