Home / 28,693.90-39,587.70-17,931.43

Finding the Fourth Proportional to 28,693.90, 39,587.70 and 17,931.43

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Solution

The fourth proportional to 28,693.90, 39,587.70 and 17,931.43 is: 24,739.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,693.90 : 39,587.70 = 17,931.43 : x
  2. Step 2: Convert to fraction form
    28,693.90/39,587.70 = 17,931.43/x
  3. Step 3: Cross multiply
    28,693.90x = 39,587.70 × 17,931.43
  4. Step 4: Simplify right side
    28,693.90x = 709,864,071.41
  5. Step 5: Solve for x
    x = 709,864,071.41/28,693.90
  6. Step 6: Final answer
    x = 24,739.20

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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.