Home / 12,990,254.52-17,926,713.90-7,189,021.56

Finding the Fourth Proportional to 12,990,254.52, 17,926,713.90 and 7,189,021.56

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Solution

The fourth proportional to 12,990,254.52, 17,926,713.90 and 7,189,021.56 is: 9,920,939.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,990,254.52 : 17,926,713.90 = 7,189,021.56 : x
  2. Step 2: Convert to fraction form
    12,990,254.52/17,926,713.90 = 7,189,021.56/x
  3. Step 3: Cross multiply
    12,990,254.52x = 17,926,713.90 × 7,189,021.56
  4. Step 4: Simplify right side
    12,990,254.52x = 128,875,532,727,051.67
  5. Step 5: Solve for x
    x = 128,875,532,727,051.67/12,990,254.52
  6. Step 6: Final answer
    x = 9,920,939.77

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1.5x scale

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.