Home / 15,587.25-21,510.31-8,513.67

Finding the Fourth Proportional to 15,587.25, 21,510.31 and 8,513.67

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Solution

The fourth proportional to 15,587.25, 21,510.31 and 8,513.67 is: 11,748.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,587.25 : 21,510.31 = 8,513.67 : x
  2. Step 2: Convert to fraction form
    15,587.25/21,510.31 = 8,513.67/x
  3. Step 3: Cross multiply
    15,587.25x = 21,510.31 × 8,513.67
  4. Step 4: Simplify right side
    15,587.25x = 183,131,756.28
  5. Step 5: Solve for x
    x = 183,131,756.28/15,587.25
  6. Step 6: Final answer
    x = 11,748.82

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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.