Home / 18,987.48-26,167.93-12,602.79

Finding the Fourth Proportional to 18,987.48, 26,167.93 and 12,602.79

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Solution

The fourth proportional to 18,987.48, 26,167.93 and 12,602.79 is: 17,368.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,987.48 : 26,167.93 = 12,602.79 : x
  2. Step 2: Convert to fraction form
    18,987.48/26,167.93 = 12,602.79/x
  3. Step 3: Cross multiply
    18,987.48x = 26,167.93 × 12,602.79
  4. Step 4: Simplify right side
    18,987.48x = 329,788,895.02
  5. Step 5: Solve for x
    x = 329,788,895.02/18,987.48
  6. Step 6: Final answer
    x = 17,368.76

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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.