Home / 18,637.65-25,720.63-10,681.42

Finding the Fourth Proportional to 18,637.65, 25,720.63 and 10,681.42

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Solution

The fourth proportional to 18,637.65, 25,720.63 and 10,681.42 is: 14,740.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637.65 : 25,720.63 = 10,681.42 : x
  2. Step 2: Convert to fraction form
    18,637.65/25,720.63 = 10,681.42/x
  3. Step 3: Cross multiply
    18,637.65x = 25,720.63 × 10,681.42
  4. Step 4: Simplify right side
    18,637.65x = 274,732,851.69
  5. Step 5: Solve for x
    x = 274,732,851.69/18,637.65
  6. Step 6: Final answer
    x = 14,740.75

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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.