Home / 28,603.17-39,471.75-15,856.29

Finding the Fourth Proportional to 28,603.17, 39,471.75 and 15,856.29

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Solution

The fourth proportional to 28,603.17, 39,471.75 and 15,856.29 is: 21,881.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,603.17 : 39,471.75 = 15,856.29 : x
  2. Step 2: Convert to fraction form
    28,603.17/39,471.75 = 15,856.29/x
  3. Step 3: Cross multiply
    28,603.17x = 39,471.75 × 15,856.29
  4. Step 4: Simplify right side
    28,603.17x = 625,875,514.81
  5. Step 5: Solve for x
    x = 625,875,514.81/28,603.17
  6. Step 6: Final answer
    x = 21,881.33

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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.