Home / 15,681.84-21,645.09-9,710.12

Finding the Fourth Proportional to 15,681.84, 21,645.09 and 9,710.12

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Solution

The fourth proportional to 15,681.84, 21,645.09 and 9,710.12 is: 13,402.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,681.84 : 21,645.09 = 9,710.12 : x
  2. Step 2: Convert to fraction form
    15,681.84/21,645.09 = 9,710.12/x
  3. Step 3: Cross multiply
    15,681.84x = 21,645.09 × 9,710.12
  4. Step 4: Simplify right side
    15,681.84x = 210,176,353.67
  5. Step 5: Solve for x
    x = 210,176,353.67/15,681.84
  6. Step 6: Final answer
    x = 13,402.53

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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.