Home / 28,417.68-39,214.80-15,670.44

Finding the Fourth Proportional to 28,417.68, 39,214.80 and 15,670.44

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Solution

The fourth proportional to 28,417.68, 39,214.80 and 15,670.44 is: 21,624.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,417.68 : 39,214.80 = 15,670.44 : x
  2. Step 2: Convert to fraction form
    28,417.68/39,214.80 = 15,670.44/x
  3. Step 3: Cross multiply
    28,417.68x = 39,214.80 × 15,670.44
  4. Step 4: Simplify right side
    28,417.68x = 614,513,170.51
  5. Step 5: Solve for x
    x = 614,513,170.51/28,417.68
  6. Step 6: Final answer
    x = 21,624.33

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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.