Home / 20,684,759.40-28,543,848.48-11,390,512.95

Finding the Fourth Proportional to 20,684,759.40, 28,543,848.48 and 11,390,512.95

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Solution

The fourth proportional to 20,684,759.40, 28,543,848.48 and 11,390,512.95 is: 15,718,291.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684,759.40 : 28,543,848.48 = 11,390,512.95 : x
  2. Step 2: Convert to fraction form
    20,684,759.40/28,543,848.48 = 11,390,512.95/x
  3. Step 3: Cross multiply
    20,684,759.40x = 28,543,848.48 × 11,390,512.95
  4. Step 4: Simplify right side
    20,684,759.40x = 325,129,075,754,277.81
  5. Step 5: Solve for x
    x = 325,129,075,754,277.81/20,684,759.40
  6. Step 6: Final answer
    x = 15,718,291.40

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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.