Home / 15,890.48-21,898.68-15,501.68

Finding the Fourth Proportional to 15,890.48, 21,898.68 and 15,501.68

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Solution

The fourth proportional to 15,890.48, 21,898.68 and 15,501.68 is: 21,362.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,890.48 : 21,898.68 = 15,501.68 : x
  2. Step 2: Convert to fraction form
    15,890.48/21,898.68 = 15,501.68/x
  3. Step 3: Cross multiply
    15,890.48x = 21,898.68 × 15,501.68
  4. Step 4: Simplify right side
    15,890.48x = 339,466,329.78
  5. Step 5: Solve for x
    x = 339,466,329.78/15,890.48
  6. Step 6: Final answer
    x = 21,362.87

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1.5x scale

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.