Home / 15,688.93-21,649.98-8,615.47

Finding the Fourth Proportional to 15,688.93, 21,649.98 and 8,615.47

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Solution

The fourth proportional to 15,688.93, 21,649.98 and 8,615.47 is: 11,888.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,688.93 : 21,649.98 = 8,615.47 : x
  2. Step 2: Convert to fraction form
    15,688.93/21,649.98 = 8,615.47/x
  3. Step 3: Cross multiply
    15,688.93x = 21,649.98 × 8,615.47
  4. Step 4: Simplify right side
    15,688.93x = 186,524,753.19
  5. Step 5: Solve for x
    x = 186,524,753.19/15,688.93
  6. Step 6: Final answer
    x = 11,888.94

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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.