Home / 28,417.99-39,215.93-15,671.71

Finding the Fourth Proportional to 28,417.99, 39,215.93 and 15,671.71

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Solution

The fourth proportional to 28,417.99, 39,215.93 and 15,671.71 is: 21,626.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,417.99 : 39,215.93 = 15,671.71 : x
  2. Step 2: Convert to fraction form
    28,417.99/39,215.93 = 15,671.71/x
  3. Step 3: Cross multiply
    28,417.99x = 39,215.93 × 15,671.71
  4. Step 4: Simplify right side
    28,417.99x = 614,580,682.34
  5. Step 5: Solve for x
    x = 614,580,682.34/28,417.99
  6. Step 6: Final answer
    x = 21,626.47

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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.