Home / 18,637.76-25,711.65-11,079.81

Finding the Fourth Proportional to 18,637.76, 25,711.65 and 11,079.81

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Solution

The fourth proportional to 18,637.76, 25,711.65 and 11,079.81 is: 15,285.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637.76 : 25,711.65 = 11,079.81 : x
  2. Step 2: Convert to fraction form
    18,637.76/25,711.65 = 11,079.81/x
  3. Step 3: Cross multiply
    18,637.76x = 25,711.65 × 11,079.81
  4. Step 4: Simplify right side
    18,637.76x = 284,880,196.79
  5. Step 5: Solve for x
    x = 284,880,196.79/18,637.76
  6. Step 6: Final answer
    x = 15,285.11

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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.