Home / 21,376.17-32,064.81-10,128.87

Finding the Fourth Proportional to 21,376.17, 32,064.81 and 10,128.87

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Solution

The fourth proportional to 21,376.17, 32,064.81 and 10,128.87 is: 15,193.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,376.17 : 32,064.81 = 10,128.87 : x
  2. Step 2: Convert to fraction form
    21,376.17/32,064.81 = 10,128.87/x
  3. Step 3: Cross multiply
    21,376.17x = 32,064.81 × 10,128.87
  4. Step 4: Simplify right side
    21,376.17x = 324,780,254.08
  5. Step 5: Solve for x
    x = 324,780,254.08/21,376.17
  6. Step 6: Final answer
    x = 15,193.57

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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.