Home / 15,587.40-21,510.56-8,513.82

Finding the Fourth Proportional to 15,587.40, 21,510.56 and 8,513.82

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Solution

The fourth proportional to 15,587.40, 21,510.56 and 8,513.82 is: 11,749.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,587.40 : 21,510.56 = 8,513.82 : x
  2. Step 2: Convert to fraction form
    15,587.40/21,510.56 = 8,513.82/x
  3. Step 3: Cross multiply
    15,587.40x = 21,510.56 × 8,513.82
  4. Step 4: Simplify right side
    15,587.40x = 183,137,035.94
  5. Step 5: Solve for x
    x = 183,137,035.94/15,587.40
  6. Step 6: Final answer
    x = 11,749.04

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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.