Home / 18,130.40-27,151.80-10,315.52

Finding the Fourth Proportional to 18,130.40, 27,151.80 and 10,315.52

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Solution

The fourth proportional to 18,130.40, 27,151.80 and 10,315.52 is: 15,448.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,130.40 : 27,151.80 = 10,315.52 : x
  2. Step 2: Convert to fraction form
    18,130.40/27,151.80 = 10,315.52/x
  3. Step 3: Cross multiply
    18,130.40x = 27,151.80 × 10,315.52
  4. Step 4: Simplify right side
    18,130.40x = 280,084,935.94
  5. Step 5: Solve for x
    x = 280,084,935.94/18,130.40
  6. Step 6: Final answer
    x = 15,448.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.