Home / 15,403.55-21,256.92-8,329.99

Finding the Fourth Proportional to 15,403.55, 21,256.92 and 8,329.99

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Solution

The fourth proportional to 15,403.55, 21,256.92 and 8,329.99 is: 11,495.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,403.55 : 21,256.92 = 8,329.99 : x
  2. Step 2: Convert to fraction form
    15,403.55/21,256.92 = 8,329.99/x
  3. Step 3: Cross multiply
    15,403.55x = 21,256.92 × 8,329.99
  4. Step 4: Simplify right side
    15,403.55x = 177,069,931.03
  5. Step 5: Solve for x
    x = 177,069,931.03/15,403.55
  6. Step 6: Final answer
    x = 11,495.40

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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.