Home / 15,681.48-21,642.30-9,393.72

Finding the Fourth Proportional to 15,681.48, 21,642.30 and 9,393.72

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Solution

The fourth proportional to 15,681.48, 21,642.30 and 9,393.72 is: 12,964.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,681.48 : 21,642.30 = 9,393.72 : x
  2. Step 2: Convert to fraction form
    15,681.48/21,642.30 = 9,393.72/x
  3. Step 3: Cross multiply
    15,681.48x = 21,642.30 × 9,393.72
  4. Step 4: Simplify right side
    15,681.48x = 203,301,706.36
  5. Step 5: Solve for x
    x = 203,301,706.36/15,681.48
  6. Step 6: Final answer
    x = 12,964.45

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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.