Home / 15,506.79-21,398.76-8,433.21

Finding the Fourth Proportional to 15,506.79, 21,398.76 and 8,433.21

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Solution

The fourth proportional to 15,506.79, 21,398.76 and 8,433.21 is: 11,637.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,506.79 : 21,398.76 = 8,433.21 : x
  2. Step 2: Convert to fraction form
    15,506.79/21,398.76 = 8,433.21/x
  3. Step 3: Cross multiply
    15,506.79x = 21,398.76 × 8,433.21
  4. Step 4: Simplify right side
    15,506.79x = 180,460,236.82
  5. Step 5: Solve for x
    x = 180,460,236.82/15,506.79
  6. Step 6: Final answer
    x = 11,637.50

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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.