Home / 15,659.02-21,602.82-9,680.32

Finding the Fourth Proportional to 15,659.02, 21,602.82 and 9,680.32

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Solution

The fourth proportional to 15,659.02, 21,602.82 and 9,680.32 is: 13,354.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,659.02 : 21,602.82 = 9,680.32 : x
  2. Step 2: Convert to fraction form
    15,659.02/21,602.82 = 9,680.32/x
  3. Step 3: Cross multiply
    15,659.02x = 21,602.82 × 9,680.32
  4. Step 4: Simplify right side
    15,659.02x = 209,122,210.50
  5. Step 5: Solve for x
    x = 209,122,210.50/15,659.02
  6. Step 6: Final answer
    x = 13,354.74

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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.