Home / 15,330.04-21,157.02-9,365.20

Finding the Fourth Proportional to 15,330.04, 21,157.02 and 9,365.20

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Solution

The fourth proportional to 15,330.04, 21,157.02 and 9,365.20 is: 12,924.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,330.04 : 21,157.02 = 9,365.20 : x
  2. Step 2: Convert to fraction form
    15,330.04/21,157.02 = 9,365.20/x
  3. Step 3: Cross multiply
    15,330.04x = 21,157.02 × 9,365.20
  4. Step 4: Simplify right side
    15,330.04x = 198,139,723.70
  5. Step 5: Solve for x
    x = 198,139,723.70/15,330.04
  6. Step 6: Final answer
    x = 12,924.93

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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.