Home / 28,459.79-42,685.67-17,897.61

Finding the Fourth Proportional to 28,459.79, 42,685.67 and 17,897.61

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Solution

The fourth proportional to 28,459.79, 42,685.67 and 17,897.61 is: 26,843.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,459.79 : 42,685.67 = 17,897.61 : x
  2. Step 2: Convert to fraction form
    28,459.79/42,685.67 = 17,897.61/x
  3. Step 3: Cross multiply
    28,459.79x = 42,685.67 × 17,897.61
  4. Step 4: Simplify right side
    28,459.79x = 763,971,679.06
  5. Step 5: Solve for x
    x = 763,971,679.06/28,459.79
  6. Step 6: Final answer
    x = 26,843.90

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1.5x scale

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.