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Finding the Fourth Proportional to 15,873.23, 21,903.86 and 8,702.00

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Solution

The fourth proportional to 15,873.23, 21,903.86 and 8,702.00 is: 12,008.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,873.23 : 21,903.86 = 8,702.00 : x
  2. Step 2: Convert to fraction form
    15,873.23/21,903.86 = 8,702.00/x
  3. Step 3: Cross multiply
    15,873.23x = 21,903.86 × 8,702.00
  4. Step 4: Simplify right side
    15,873.23x = 190,607,280.20
  5. Step 5: Solve for x
    x = 190,607,280.20/15,873.23
  6. Step 6: Final answer
    x = 12,008.10

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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.