Home / 15,421.93-21,282.23-8,348.35

Finding the Fourth Proportional to 15,421.93, 21,282.23 and 8,348.35

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Solution

The fourth proportional to 15,421.93, 21,282.23 and 8,348.35 is: 11,520.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,421.93 : 21,282.23 = 8,348.35 : x
  2. Step 2: Convert to fraction form
    15,421.93/21,282.23 = 8,348.35/x
  3. Step 3: Cross multiply
    15,421.93x = 21,282.23 × 8,348.35
  4. Step 4: Simplify right side
    15,421.93x = 177,671,419.28
  5. Step 5: Solve for x
    x = 177,671,419.28/15,421.93
  6. Step 6: Final answer
    x = 11,520.70

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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.