Home / 28,011,283.02-38,655,865.80-15,788,140.02

Finding the Fourth Proportional to 28,011,283.02, 38,655,865.80 and 15,788,140.02

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Solution

The fourth proportional to 28,011,283.02, 38,655,865.80 and 15,788,140.02 is: 21,787,799.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011,283.02 : 38,655,865.80 = 15,788,140.02 : x
  2. Step 2: Convert to fraction form
    28,011,283.02/38,655,865.80 = 15,788,140.02/x
  3. Step 3: Cross multiply
    28,011,283.02x = 38,655,865.80 × 15,788,140.02
  4. Step 4: Simplify right side
    28,011,283.02x = 610,304,221,844,729.25
  5. Step 5: Solve for x
    x = 610,304,221,844,729.25/28,011,283.02
  6. Step 6: Final answer
    x = 21,787,799.63

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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.