Home / 15,445.13-21,314.60-8,730.35

Finding the Fourth Proportional to 15,445.13, 21,314.60 and 8,730.35

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Solution

The fourth proportional to 15,445.13, 21,314.60 and 8,730.35 is: 12,048.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,445.13 : 21,314.60 = 8,730.35 : x
  2. Step 2: Convert to fraction form
    15,445.13/21,314.60 = 8,730.35/x
  3. Step 3: Cross multiply
    15,445.13x = 21,314.60 × 8,730.35
  4. Step 4: Simplify right side
    15,445.13x = 186,083,918.11
  5. Step 5: Solve for x
    x = 186,083,918.11/15,445.13
  6. Step 6: Final answer
    x = 12,048.07

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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.