Home / 15,139.42-20,883.76-9,088.05

Finding the Fourth Proportional to 15,139.42, 20,883.76 and 9,088.05

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Solution

The fourth proportional to 15,139.42, 20,883.76 and 9,088.05 is: 12,536.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,139.42 : 20,883.76 = 9,088.05 : x
  2. Step 2: Convert to fraction form
    15,139.42/20,883.76 = 9,088.05/x
  3. Step 3: Cross multiply
    15,139.42x = 20,883.76 × 9,088.05
  4. Step 4: Simplify right side
    15,139.42x = 189,792,655.07
  5. Step 5: Solve for x
    x = 189,792,655.07/15,139.42
  6. Step 6: Final answer
    x = 12,536.32

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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.