Home / 15,085.02-20,803.66-9,420.29

Finding the Fourth Proportional to 15,085.02, 20,803.66 and 9,420.29

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Solution

The fourth proportional to 15,085.02, 20,803.66 and 9,420.29 is: 12,991.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,085.02 : 20,803.66 = 9,420.29 : x
  2. Step 2: Convert to fraction form
    15,085.02/20,803.66 = 9,420.29/x
  3. Step 3: Cross multiply
    15,085.02x = 20,803.66 × 9,420.29
  4. Step 4: Simplify right side
    15,085.02x = 195,976,510.26
  5. Step 5: Solve for x
    x = 195,976,510.26/15,085.02
  6. Step 6: Final answer
    x = 12,991.47

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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.