Home / 42,129.84-63,194.58-10,965

Finding the Fourth Proportional to 42,129.84, 63,194.58 and 10,965

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Solution

The fourth proportional to 42,129.84, 63,194.58 and 10,965 is: 16,447.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,129.84 : 63,194.58 = 10,965 : x
  2. Step 2: Convert to fraction form
    42,129.84/63,194.58 = 10,965/x
  3. Step 3: Cross multiply
    42,129.84x = 63,194.58 × 10,965
  4. Step 4: Simplify right side
    42,129.84x = 692,928,569.70
  5. Step 5: Solve for x
    x = 692,928,569.70/42,129.84
  6. Step 6: Final answer
    x = 16,447.45

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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.