Home / 28,075.95-38,713.34-19,128.69

Finding the Fourth Proportional to 28,075.95, 38,713.34 and 19,128.69

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Solution

The fourth proportional to 28,075.95, 38,713.34 and 19,128.69 is: 26,376.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,075.95 : 38,713.34 = 19,128.69 : x
  2. Step 2: Convert to fraction form
    28,075.95/38,713.34 = 19,128.69/x
  3. Step 3: Cross multiply
    28,075.95x = 38,713.34 × 19,128.69
  4. Step 4: Simplify right side
    28,075.95x = 740,535,527.55
  5. Step 5: Solve for x
    x = 740,535,527.55/28,075.95
  6. Step 6: Final answer
    x = 26,376.15

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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.