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Finding the Fourth Proportional to 18,870.76, 26,041.08 and 10,804.15

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Solution

The fourth proportional to 18,870.76, 26,041.08 and 10,804.15 is: 14,909.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,870.76 : 26,041.08 = 10,804.15 : x
  2. Step 2: Convert to fraction form
    18,870.76/26,041.08 = 10,804.15/x
  3. Step 3: Cross multiply
    18,870.76x = 26,041.08 × 10,804.15
  4. Step 4: Simplify right side
    18,870.76x = 281,351,631.29
  5. Step 5: Solve for x
    x = 281,351,631.29/18,870.76
  6. Step 6: Final answer
    x = 14,909.40

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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.