Home / 13,718.28-18,931.22-7,430.60

Finding the Fourth Proportional to 13,718.28, 18,931.22 and 7,430.60

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Solution

The fourth proportional to 13,718.28, 18,931.22 and 7,430.60 is: 10,254.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,718.28 : 18,931.22 = 7,430.60 : x
  2. Step 2: Convert to fraction form
    13,718.28/18,931.22 = 7,430.60/x
  3. Step 3: Cross multiply
    13,718.28x = 18,931.22 × 7,430.60
  4. Step 4: Simplify right side
    13,718.28x = 140,670,323.33
  5. Step 5: Solve for x
    x = 140,670,323.33/13,718.28
  6. Step 6: Final answer
    x = 10,254.22

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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.