Home / 21,257,528.20-31,862,672.70-11,679,780.40

Finding the Fourth Proportional to 21,257,528.20, 31,862,672.70 and 11,679,780.40

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Solution

The fourth proportional to 21,257,528.20, 31,862,672.70 and 11,679,780.40 is: 17,506,693.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,257,528.20 : 31,862,672.70 = 11,679,780.40 : x
  2. Step 2: Convert to fraction form
    21,257,528.20/31,862,672.70 = 11,679,780.40/x
  3. Step 3: Cross multiply
    21,257,528.20x = 31,862,672.70 × 11,679,780.40
  4. Step 4: Simplify right side
    21,257,528.20x = 372,149,020,093,075.06
  5. Step 5: Solve for x
    x = 372,149,020,093,075.06/21,257,528.20
  6. Step 6: Final answer
    x = 17,506,693.00

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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.