Home / 28,101.13-38,713.70-19,587.77

Finding the Fourth Proportional to 28,101.13, 38,713.70 and 19,587.77

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Solution

The fourth proportional to 28,101.13, 38,713.70 and 19,587.77 is: 26,985.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,101.13 : 38,713.70 = 19,587.77 : x
  2. Step 2: Convert to fraction form
    28,101.13/38,713.70 = 19,587.77/x
  3. Step 3: Cross multiply
    28,101.13x = 38,713.70 × 19,587.77
  4. Step 4: Simplify right side
    28,101.13x = 758,315,159.61
  5. Step 5: Solve for x
    x = 758,315,159.61/28,101.13
  6. Step 6: Final answer
    x = 26,985.22

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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.