Home / 21,510.32-29,683.48-12,079.28

Finding the Fourth Proportional to 21,510.32, 29,683.48 and 12,079.28

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Solution

The fourth proportional to 21,510.32, 29,683.48 and 12,079.28 is: 16,668.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,510.32 : 29,683.48 = 12,079.28 : x
  2. Step 2: Convert to fraction form
    21,510.32/29,683.48 = 12,079.28/x
  3. Step 3: Cross multiply
    21,510.32x = 29,683.48 × 12,079.28
  4. Step 4: Simplify right side
    21,510.32x = 358,555,066.29
  5. Step 5: Solve for x
    x = 358,555,066.29/21,510.32
  6. Step 6: Final answer
    x = 16,668.98

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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.