Home / 15,313.86-21,141-13,099.52

Finding the Fourth Proportional to 15,313.86, 21,141 and 13,099.52

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Solution

The fourth proportional to 15,313.86, 21,141 and 13,099.52 is: 18,084.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,313.86 : 21,141 = 13,099.52 : x
  2. Step 2: Convert to fraction form
    15,313.86/21,141 = 13,099.52/x
  3. Step 3: Cross multiply
    15,313.86x = 21,141 × 13,099.52
  4. Step 4: Simplify right side
    15,313.86x = 276,937,005.17
  5. Step 5: Solve for x
    x = 276,937,005.17/15,313.86
  6. Step 6: Final answer
    x = 18,084.08

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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.