Home / 12,428.87-18,643.29-10,232.98

Finding the Fourth Proportional to 12,428.87, 18,643.29 and 10,232.98

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Solution

The fourth proportional to 12,428.87, 18,643.29 and 10,232.98 is: 15,349.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,428.87 : 18,643.29 = 10,232.98 : x
  2. Step 2: Convert to fraction form
    12,428.87/18,643.29 = 10,232.98/x
  3. Step 3: Cross multiply
    12,428.87x = 18,643.29 × 10,232.98
  4. Step 4: Simplify right side
    12,428.87x = 190,776,386.28
  5. Step 5: Solve for x
    x = 190,776,386.28/12,428.87
  6. Step 6: Final answer
    x = 15,349.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.