Home / 18,935.06-26,130.41-10,981.91

Finding the Fourth Proportional to 18,935.06, 26,130.41 and 10,981.91

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Solution

The fourth proportional to 18,935.06, 26,130.41 and 10,981.91 is: 15,155.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,935.06 : 26,130.41 = 10,981.91 : x
  2. Step 2: Convert to fraction form
    18,935.06/26,130.41 = 10,981.91/x
  3. Step 3: Cross multiply
    18,935.06x = 26,130.41 × 10,981.91
  4. Step 4: Simplify right side
    18,935.06x = 286,961,625.32
  5. Step 5: Solve for x
    x = 286,961,625.32/18,935.06
  6. Step 6: Final answer
    x = 15,155.05

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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.