Home / 14,020,005.40-21,030,008.10-7,642,713.40

Finding the Fourth Proportional to 14,020,005.40, 21,030,008.10 and 7,642,713.40

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Solution

The fourth proportional to 14,020,005.40, 21,030,008.10 and 7,642,713.40 is: 11,464,070.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,020,005.40 : 21,030,008.10 = 7,642,713.40 : x
  2. Step 2: Convert to fraction form
    14,020,005.40/21,030,008.10 = 7,642,713.40/x
  3. Step 3: Cross multiply
    14,020,005.40x = 21,030,008.10 × 7,642,713.40
  4. Step 4: Simplify right side
    14,020,005.40x = 160,726,324,707,978.56
  5. Step 5: Solve for x
    x = 160,726,324,707,978.56/14,020,005.40
  6. Step 6: Final answer
    x = 11,464,070.10

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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.