Home / 15,358.22-21,190.10-8,643.45

Finding the Fourth Proportional to 15,358.22, 21,190.10 and 8,643.45

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Solution

The fourth proportional to 15,358.22, 21,190.10 and 8,643.45 is: 11,925.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,358.22 : 21,190.10 = 8,643.45 : x
  2. Step 2: Convert to fraction form
    15,358.22/21,190.10 = 8,643.45/x
  3. Step 3: Cross multiply
    15,358.22x = 21,190.10 × 8,643.45
  4. Step 4: Simplify right side
    15,358.22x = 183,155,526.63
  5. Step 5: Solve for x
    x = 183,155,526.63/15,358.22
  6. Step 6: Final answer
    x = 11,925.57

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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.