Home / 30,776.95-42,482.64-19,144.27

Finding the Fourth Proportional to 30,776.95, 42,482.64 and 19,144.27

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Solution

The fourth proportional to 30,776.95, 42,482.64 and 19,144.27 is: 26,425.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,776.95 : 42,482.64 = 19,144.27 : x
  2. Step 2: Convert to fraction form
    30,776.95/42,482.64 = 19,144.27/x
  3. Step 3: Cross multiply
    30,776.95x = 42,482.64 × 19,144.27
  4. Step 4: Simplify right side
    30,776.95x = 813,299,130.47
  5. Step 5: Solve for x
    x = 813,299,130.47/30,776.95
  6. Step 6: Final answer
    x = 26,425.59

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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.