Home / 28,417.13-39,214.75-15,670.85

Finding the Fourth Proportional to 28,417.13, 39,214.75 and 15,670.85

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Solution

The fourth proportional to 28,417.13, 39,214.75 and 15,670.85 is: 21,625.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,417.13 : 39,214.75 = 15,670.85 : x
  2. Step 2: Convert to fraction form
    28,417.13/39,214.75 = 15,670.85/x
  3. Step 3: Cross multiply
    28,417.13x = 39,214.75 × 15,670.85
  4. Step 4: Simplify right side
    28,417.13x = 614,528,601.12
  5. Step 5: Solve for x
    x = 614,528,601.12/28,417.13
  6. Step 6: Final answer
    x = 21,625.28

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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.