Home / 15,285.96-21,091.86-10,257.48

Finding the Fourth Proportional to 15,285.96, 21,091.86 and 10,257.48

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Solution

The fourth proportional to 15,285.96, 21,091.86 and 10,257.48 is: 14,153.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,285.96 : 21,091.86 = 10,257.48 : x
  2. Step 2: Convert to fraction form
    15,285.96/21,091.86 = 10,257.48/x
  3. Step 3: Cross multiply
    15,285.96x = 21,091.86 × 10,257.48
  4. Step 4: Simplify right side
    15,285.96x = 216,349,332.11
  5. Step 5: Solve for x
    x = 216,349,332.11/15,285.96
  6. Step 6: Final answer
    x = 14,153.47

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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.