Home / 15,459.73-21,351.81-10,415.12

Finding the Fourth Proportional to 15,459.73, 21,351.81 and 10,415.12

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Solution

The fourth proportional to 15,459.73, 21,351.81 and 10,415.12 is: 14,384.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,459.73 : 21,351.81 = 10,415.12 : x
  2. Step 2: Convert to fraction form
    15,459.73/21,351.81 = 10,415.12/x
  3. Step 3: Cross multiply
    15,459.73x = 21,351.81 × 10,415.12
  4. Step 4: Simplify right side
    15,459.73x = 222,381,663.37
  5. Step 5: Solve for x
    x = 222,381,663.37/15,459.73
  6. Step 6: Final answer
    x = 14,384.58

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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.