Home / 15,503.62-21,395.22-8,430.16

Finding the Fourth Proportional to 15,503.62, 21,395.22 and 8,430.16

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Solution

The fourth proportional to 15,503.62, 21,395.22 and 8,430.16 is: 11,633.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,503.62 : 21,395.22 = 8,430.16 : x
  2. Step 2: Convert to fraction form
    15,503.62/21,395.22 = 8,430.16/x
  3. Step 3: Cross multiply
    15,503.62x = 21,395.22 × 8,430.16
  4. Step 4: Simplify right side
    15,503.62x = 180,365,127.84
  5. Step 5: Solve for x
    x = 180,365,127.84/15,503.62
  6. Step 6: Final answer
    x = 11,633.74

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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.