Home / 15,407.87-21,261.02-8,693.10

Finding the Fourth Proportional to 15,407.87, 21,261.02 and 8,693.10

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Solution

The fourth proportional to 15,407.87, 21,261.02 and 8,693.10 is: 11,995.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,407.87 : 21,261.02 = 8,693.10 : x
  2. Step 2: Convert to fraction form
    15,407.87/21,261.02 = 8,693.10/x
  3. Step 3: Cross multiply
    15,407.87x = 21,261.02 × 8,693.10
  4. Step 4: Simplify right side
    15,407.87x = 184,824,129.50
  5. Step 5: Solve for x
    x = 184,824,129.50/15,407.87
  6. Step 6: Final answer
    x = 11,995.44

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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.