Home / 21,920,988.96-30,251,022.21-12,132,108.18

Finding the Fourth Proportional to 21,920,988.96, 30,251,022.21 and 12,132,108.18

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Solution

The fourth proportional to 21,920,988.96, 30,251,022.21 and 12,132,108.18 is: 16,742,341.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,920,988.96 : 30,251,022.21 = 12,132,108.18 : x
  2. Step 2: Convert to fraction form
    21,920,988.96/30,251,022.21 = 12,132,108.18/x
  3. Step 3: Cross multiply
    21,920,988.96x = 30,251,022.21 × 12,132,108.18
  4. Step 4: Simplify right side
    21,920,988.96x = 367,008,674,007,302.69
  5. Step 5: Solve for x
    x = 367,008,674,007,302.69/21,920,988.96
  6. Step 6: Final answer
    x = 16,742,341.08

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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.