Home / 13,725.41-18,931.51-10,888.81

Finding the Fourth Proportional to 13,725.41, 18,931.51 and 10,888.81

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Solution

The fourth proportional to 13,725.41, 18,931.51 and 10,888.81 is: 15,018.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,725.41 : 18,931.51 = 10,888.81 : x
  2. Step 2: Convert to fraction form
    13,725.41/18,931.51 = 10,888.81/x
  3. Step 3: Cross multiply
    13,725.41x = 18,931.51 × 10,888.81
  4. Step 4: Simplify right side
    13,725.41x = 206,141,615.40
  5. Step 5: Solve for x
    x = 206,141,615.40/13,725.41
  6. Step 6: Final answer
    x = 15,018.98

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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.