Home / 19,130.51-28,666.54-12,867.36

Finding the Fourth Proportional to 19,130.51, 28,666.54 and 12,867.36

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Solution

The fourth proportional to 19,130.51, 28,666.54 and 12,867.36 is: 19,281.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,130.51 : 28,666.54 = 12,867.36 : x
  2. Step 2: Convert to fraction form
    19,130.51/28,666.54 = 12,867.36/x
  3. Step 3: Cross multiply
    19,130.51x = 28,666.54 × 12,867.36
  4. Step 4: Simplify right side
    19,130.51x = 368,862,598.72
  5. Step 5: Solve for x
    x = 368,862,598.72/19,130.51
  6. Step 6: Final answer
    x = 19,281.38

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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.