Home / 15,719.68-21,683.67-9,670.95

Finding the Fourth Proportional to 15,719.68, 21,683.67 and 9,670.95

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Solution

The fourth proportional to 15,719.68, 21,683.67 and 9,670.95 is: 13,340.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,719.68 : 21,683.67 = 9,670.95 : x
  2. Step 2: Convert to fraction form
    15,719.68/21,683.67 = 9,670.95/x
  3. Step 3: Cross multiply
    15,719.68x = 21,683.67 × 9,670.95
  4. Step 4: Simplify right side
    15,719.68x = 209,701,652.12
  5. Step 5: Solve for x
    x = 209,701,652.12/15,719.68
  6. Step 6: Final answer
    x = 13,340.08

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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.