Home / 18,130.28-25,019.71-10,172.53

Finding the Fourth Proportional to 18,130.28, 25,019.71 and 10,172.53

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Solution

The fourth proportional to 18,130.28, 25,019.71 and 10,172.53 is: 14,038.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,130.28 : 25,019.71 = 10,172.53 : x
  2. Step 2: Convert to fraction form
    18,130.28/25,019.71 = 10,172.53/x
  3. Step 3: Cross multiply
    18,130.28x = 25,019.71 × 10,172.53
  4. Step 4: Simplify right side
    18,130.28x = 254,513,662.59
  5. Step 5: Solve for x
    x = 254,513,662.59/18,130.28
  6. Step 6: Final answer
    x = 14,038.05

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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.