Home / 21,432.05-32,126.81-10,870.66

Finding the Fourth Proportional to 21,432.05, 32,126.81 and 10,870.66

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Solution

The fourth proportional to 21,432.05, 32,126.81 and 10,870.66 is: 16,295.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,432.05 : 32,126.81 = 10,870.66 : x
  2. Step 2: Convert to fraction form
    21,432.05/32,126.81 = 10,870.66/x
  3. Step 3: Cross multiply
    21,432.05x = 32,126.81 × 10,870.66
  4. Step 4: Simplify right side
    21,432.05x = 349,239,628.39
  5. Step 5: Solve for x
    x = 349,239,628.39/21,432.05
  6. Step 6: Final answer
    x = 16,295.20

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1.5x scale

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.