Home / 15,869.47-21,888.23-11,397.82

Finding the Fourth Proportional to 15,869.47, 21,888.23 and 11,397.82

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Solution

The fourth proportional to 15,869.47, 21,888.23 and 11,397.82 is: 15,720.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,869.47 : 21,888.23 = 11,397.82 : x
  2. Step 2: Convert to fraction form
    15,869.47/21,888.23 = 11,397.82/x
  3. Step 3: Cross multiply
    15,869.47x = 21,888.23 × 11,397.82
  4. Step 4: Simplify right side
    15,869.47x = 249,478,017.02
  5. Step 5: Solve for x
    x = 249,478,017.02/15,869.47
  6. Step 6: Final answer
    x = 15,720.63

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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.