Home / 13,412.61-18,510.21-7,748.40

Finding the Fourth Proportional to 13,412.61, 18,510.21 and 7,748.40

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Solution

The fourth proportional to 13,412.61, 18,510.21 and 7,748.40 is: 10,693.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,412.61 : 18,510.21 = 7,748.40 : x
  2. Step 2: Convert to fraction form
    13,412.61/18,510.21 = 7,748.40/x
  3. Step 3: Cross multiply
    13,412.61x = 18,510.21 × 7,748.40
  4. Step 4: Simplify right side
    13,412.61x = 143,424,511.16
  5. Step 5: Solve for x
    x = 143,424,511.16/13,412.61
  6. Step 6: Final answer
    x = 10,693.26

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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.