Home / 13,931.66-19,220.64-9,154.18

Finding the Fourth Proportional to 13,931.66, 19,220.64 and 9,154.18

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Solution

The fourth proportional to 13,931.66, 19,220.64 and 9,154.18 is: 12,629.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.66 : 19,220.64 = 9,154.18 : x
  2. Step 2: Convert to fraction form
    13,931.66/19,220.64 = 9,154.18/x
  3. Step 3: Cross multiply
    13,931.66x = 19,220.64 × 9,154.18
  4. Step 4: Simplify right side
    13,931.66x = 175,949,150.22
  5. Step 5: Solve for x
    x = 175,949,150.22/13,931.66
  6. Step 6: Final answer
    x = 12,629.45

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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.