Home / 20,005.20-27,607.74-10,931.16

Finding the Fourth Proportional to 20,005.20, 27,607.74 and 10,931.16

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Solution

The fourth proportional to 20,005.20, 27,607.74 and 10,931.16 is: 15,085.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,005.20 : 27,607.74 = 10,931.16 : x
  2. Step 2: Convert to fraction form
    20,005.20/27,607.74 = 10,931.16/x
  3. Step 3: Cross multiply
    20,005.20x = 27,607.74 × 10,931.16
  4. Step 4: Simplify right side
    20,005.20x = 301,784,623.18
  5. Step 5: Solve for x
    x = 301,784,623.18/20,005.20
  6. Step 6: Final answer
    x = 15,085.31

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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.