Home / 15,803.40-21,809.32-9,089.02

Finding the Fourth Proportional to 15,803.40, 21,809.32 and 9,089.02

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Solution

The fourth proportional to 15,803.40, 21,809.32 and 9,089.02 is: 12,543.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,803.40 : 21,809.32 = 9,089.02 : x
  2. Step 2: Convert to fraction form
    15,803.40/21,809.32 = 9,089.02/x
  3. Step 3: Cross multiply
    15,803.40x = 21,809.32 × 9,089.02
  4. Step 4: Simplify right side
    15,803.40x = 198,225,384.29
  5. Step 5: Solve for x
    x = 198,225,384.29/15,803.40
  6. Step 6: Final answer
    x = 12,543.21

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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.