Home / 58,628.10-87,889.95-21,180

Finding the Fourth Proportional to 58,628.10, 87,889.95 and 21,180

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Solution

The fourth proportional to 58,628.10, 87,889.95 and 21,180 is: 31,751.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,628.10 : 87,889.95 = 21,180 : x
  2. Step 2: Convert to fraction form
    58,628.10/87,889.95 = 21,180/x
  3. Step 3: Cross multiply
    58,628.10x = 87,889.95 × 21,180
  4. Step 4: Simplify right side
    58,628.10x = 1,861,509,141
  5. Step 5: Solve for x
    x = 1,861,509,141/58,628.10
  6. Step 6: Final answer
    x = 31,751.14

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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.