Home / 15,503.02-21,394.32-8,429.46

Finding the Fourth Proportional to 15,503.02, 21,394.32 and 8,429.46

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Solution

The fourth proportional to 15,503.02, 21,394.32 and 8,429.46 is: 11,632.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,503.02 : 21,394.32 = 8,429.46 : x
  2. Step 2: Convert to fraction form
    15,503.02/21,394.32 = 8,429.46/x
  3. Step 3: Cross multiply
    15,503.02x = 21,394.32 × 8,429.46
  4. Step 4: Simplify right side
    15,503.02x = 180,342,564.67
  5. Step 5: Solve for x
    x = 180,342,564.67/15,503.02
  6. Step 6: Final answer
    x = 11,632.74

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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.