Home / 42,707.68-64,075.20-19,327.84

Finding the Fourth Proportional to 42,707.68, 64,075.20 and 19,327.84

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Solution

The fourth proportional to 42,707.68, 64,075.20 and 19,327.84 is: 28,997.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,707.68 : 64,075.20 = 19,327.84 : x
  2. Step 2: Convert to fraction form
    42,707.68/64,075.20 = 19,327.84/x
  3. Step 3: Cross multiply
    42,707.68x = 64,075.20 × 19,327.84
  4. Step 4: Simplify right side
    42,707.68x = 1,238,435,213.57
  5. Step 5: Solve for x
    x = 1,238,435,213.57/42,707.68
  6. Step 6: Final answer
    x = 28,997.95

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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.