Home / 19,929.20-27,501.95-10,977.53

Finding the Fourth Proportional to 19,929.20, 27,501.95 and 10,977.53

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Solution

The fourth proportional to 19,929.20, 27,501.95 and 10,977.53 is: 15,148.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,929.20 : 27,501.95 = 10,977.53 : x
  2. Step 2: Convert to fraction form
    19,929.20/27,501.95 = 10,977.53/x
  3. Step 3: Cross multiply
    19,929.20x = 27,501.95 × 10,977.53
  4. Step 4: Simplify right side
    19,929.20x = 301,903,288.79
  5. Step 5: Solve for x
    x = 301,903,288.79/19,929.20
  6. Step 6: Final answer
    x = 15,148.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.