Home / 19,860.77-27,410.13-10,909.05

Finding the Fourth Proportional to 19,860.77, 27,410.13 and 10,909.05

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Solution

The fourth proportional to 19,860.77, 27,410.13 and 10,909.05 is: 15,055.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,860.77 : 27,410.13 = 10,909.05 : x
  2. Step 2: Convert to fraction form
    19,860.77/27,410.13 = 10,909.05/x
  3. Step 3: Cross multiply
    19,860.77x = 27,410.13 × 10,909.05
  4. Step 4: Simplify right side
    19,860.77x = 299,018,478.68
  5. Step 5: Solve for x
    x = 299,018,478.68/19,860.77
  6. Step 6: Final answer
    x = 15,055.74

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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.