Home / 15,681.33-21,643.59-9,397.35

Finding the Fourth Proportional to 15,681.33, 21,643.59 and 9,397.35

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Solution

The fourth proportional to 15,681.33, 21,643.59 and 9,397.35 is: 12,970.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,681.33 : 21,643.59 = 9,397.35 : x
  2. Step 2: Convert to fraction form
    15,681.33/21,643.59 = 9,397.35/x
  3. Step 3: Cross multiply
    15,681.33x = 21,643.59 × 9,397.35
  4. Step 4: Simplify right side
    15,681.33x = 203,392,390.49
  5. Step 5: Solve for x
    x = 203,392,390.49/15,681.33
  6. Step 6: Final answer
    x = 12,970.35

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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.