Home / 15,329.74-21,155.02-8,960.71

Finding the Fourth Proportional to 15,329.74, 21,155.02 and 8,960.71

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Solution

The fourth proportional to 15,329.74, 21,155.02 and 8,960.71 is: 12,365.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,329.74 : 21,155.02 = 8,960.71 : x
  2. Step 2: Convert to fraction form
    15,329.74/21,155.02 = 8,960.71/x
  3. Step 3: Cross multiply
    15,329.74x = 21,155.02 × 8,960.71
  4. Step 4: Simplify right side
    15,329.74x = 189,563,999.26
  5. Step 5: Solve for x
    x = 189,563,999.26/15,329.74
  6. Step 6: Final answer
    x = 12,365.77

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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.