Home / 15,154.93-20,921.99-10,631.47

Finding the Fourth Proportional to 15,154.93, 20,921.99 and 10,631.47

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Solution

The fourth proportional to 15,154.93, 20,921.99 and 10,631.47 is: 14,677.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,154.93 : 20,921.99 = 10,631.47 : x
  2. Step 2: Convert to fraction form
    15,154.93/20,921.99 = 10,631.47/x
  3. Step 3: Cross multiply
    15,154.93x = 20,921.99 × 10,631.47
  4. Step 4: Simplify right side
    15,154.93x = 222,431,509.03
  5. Step 5: Solve for x
    x = 222,431,509.03/15,154.93
  6. Step 6: Final answer
    x = 14,677.17

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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.