Home / 19,883.60-27,438.21-10,931.10

Finding the Fourth Proportional to 19,883.60, 27,438.21 and 10,931.10

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Solution

The fourth proportional to 19,883.60, 27,438.21 and 10,931.10 is: 15,084.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,883.60 : 27,438.21 = 10,931.10 : x
  2. Step 2: Convert to fraction form
    19,883.60/27,438.21 = 10,931.10/x
  3. Step 3: Cross multiply
    19,883.60x = 27,438.21 × 10,931.10
  4. Step 4: Simplify right side
    19,883.60x = 299,929,762.68
  5. Step 5: Solve for x
    x = 299,929,762.68/19,883.60
  6. Step 6: Final answer
    x = 15,084.28

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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.