Home / 12,942,320.40-17,860,497.84-7,141,316.40

Finding the Fourth Proportional to 12,942,320.40, 17,860,497.84 and 7,141,316.40

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Solution

The fourth proportional to 12,942,320.40, 17,860,497.84 and 7,141,316.40 is: 9,855,069.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,942,320.40 : 17,860,497.84 = 7,141,316.40 : x
  2. Step 2: Convert to fraction form
    12,942,320.40/17,860,497.84 = 7,141,316.40/x
  3. Step 3: Cross multiply
    12,942,320.40x = 17,860,497.84 × 7,141,316.40
  4. Step 4: Simplify right side
    12,942,320.40x = 127,547,466,136,956.58
  5. Step 5: Solve for x
    x = 127,547,466,136,956.58/12,942,320.40
  6. Step 6: Final answer
    x = 9,855,069.43

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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.