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Finding the Fourth Proportional to 13,510.10, 18,870.40 and 13,510.10

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Solution

The fourth proportional to 13,510.10, 18,870.40 and 13,510.10 is: 18,870.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,510.10 : 18,870.40 = 13,510.10 : x
  2. Step 2: Convert to fraction form
    13,510.10/18,870.40 = 13,510.10/x
  3. Step 3: Cross multiply
    13,510.10x = 18,870.40 × 13,510.10
  4. Step 4: Simplify right side
    13,510.10x = 254,940,991.04
  5. Step 5: Solve for x
    x = 254,940,991.04/13,510.10
  6. Step 6: Final answer
    x = 18,870.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.