Home / 15,688.02-21,648.34-8,613.12

Finding the Fourth Proportional to 15,688.02, 21,648.34 and 8,613.12

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Solution

The fourth proportional to 15,688.02, 21,648.34 and 8,613.12 is: 11,885.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,688.02 : 21,648.34 = 8,613.12 : x
  2. Step 2: Convert to fraction form
    15,688.02/21,648.34 = 8,613.12/x
  3. Step 3: Cross multiply
    15,688.02x = 21,648.34 × 8,613.12
  4. Step 4: Simplify right side
    15,688.02x = 186,459,750.22
  5. Step 5: Solve for x
    x = 186,459,750.22/15,688.02
  6. Step 6: Final answer
    x = 11,885.49

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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.