Home / 19,875.51-27,418.10-15,151.59

Finding the Fourth Proportional to 19,875.51, 27,418.10 and 15,151.59

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Solution

The fourth proportional to 19,875.51, 27,418.10 and 15,151.59 is: 20,901.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,875.51 : 27,418.10 = 15,151.59 : x
  2. Step 2: Convert to fraction form
    19,875.51/27,418.10 = 15,151.59/x
  3. Step 3: Cross multiply
    19,875.51x = 27,418.10 × 15,151.59
  4. Step 4: Simplify right side
    19,875.51x = 415,427,734.02
  5. Step 5: Solve for x
    x = 415,427,734.02/19,875.51
  6. Step 6: Final answer
    x = 20,901.49

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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.