Home / 15,688.89-21,664.73-11,703.08

Finding the Fourth Proportional to 15,688.89, 21,664.73 and 11,703.08

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Solution

The fourth proportional to 15,688.89, 21,664.73 and 11,703.08 is: 16,160.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,688.89 : 21,664.73 = 11,703.08 : x
  2. Step 2: Convert to fraction form
    15,688.89/21,664.73 = 11,703.08/x
  3. Step 3: Cross multiply
    15,688.89x = 21,664.73 × 11,703.08
  4. Step 4: Simplify right side
    15,688.89x = 253,544,151.79
  5. Step 5: Solve for x
    x = 253,544,151.79/15,688.89
  6. Step 6: Final answer
    x = 16,160.75

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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.