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Finding the Fourth Proportional to 15,030.76, 20,723.55 and 9,643.66

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Solution

The fourth proportional to 15,030.76, 20,723.55 and 9,643.66 is: 13,296.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,030.76 : 20,723.55 = 9,643.66 : x
  2. Step 2: Convert to fraction form
    15,030.76/20,723.55 = 9,643.66/x
  3. Step 3: Cross multiply
    15,030.76x = 20,723.55 × 9,643.66
  4. Step 4: Simplify right side
    15,030.76x = 199,850,870.19
  5. Step 5: Solve for x
    x = 199,850,870.19/15,030.76
  6. Step 6: Final answer
    x = 13,296.13

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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.