Home / 28,306.42-39,026.13-18,216.82

Finding the Fourth Proportional to 28,306.42, 39,026.13 and 18,216.82

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Solution

The fourth proportional to 28,306.42, 39,026.13 and 18,216.82 is: 25,115.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,306.42 : 39,026.13 = 18,216.82 : x
  2. Step 2: Convert to fraction form
    28,306.42/39,026.13 = 18,216.82/x
  3. Step 3: Cross multiply
    28,306.42x = 39,026.13 × 18,216.82
  4. Step 4: Simplify right side
    28,306.42x = 710,931,985.51
  5. Step 5: Solve for x
    x = 710,931,985.51/28,306.42
  6. Step 6: Final answer
    x = 25,115.57

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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.