Home / 15,344.34-21,178.74-8,973.90

Finding the Fourth Proportional to 15,344.34, 21,178.74 and 8,973.90

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Solution

The fourth proportional to 15,344.34, 21,178.74 and 8,973.90 is: 12,386.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,344.34 : 21,178.74 = 8,973.90 : x
  2. Step 2: Convert to fraction form
    15,344.34/21,178.74 = 8,973.90/x
  3. Step 3: Cross multiply
    15,344.34x = 21,178.74 × 8,973.90
  4. Step 4: Simplify right side
    15,344.34x = 190,055,894.89
  5. Step 5: Solve for x
    x = 190,055,894.89/15,344.34
  6. Step 6: Final answer
    x = 12,386.06

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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.