Home / 21,785.02-30,062.95-12,225.13

Finding the Fourth Proportional to 21,785.02, 30,062.95 and 12,225.13

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Solution

The fourth proportional to 21,785.02, 30,062.95 and 12,225.13 is: 16,870.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,785.02 : 30,062.95 = 12,225.13 : x
  2. Step 2: Convert to fraction form
    21,785.02/30,062.95 = 12,225.13/x
  3. Step 3: Cross multiply
    21,785.02x = 30,062.95 × 12,225.13
  4. Step 4: Simplify right side
    21,785.02x = 367,523,366.21
  5. Step 5: Solve for x
    x = 367,523,366.21/21,785.02
  6. Step 6: Final answer
    x = 16,870.46

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Double scale
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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.