Home / 21,148.08-29,215.95-13,897.32

Finding the Fourth Proportional to 21,148.08, 29,215.95 and 13,897.32

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Solution

The fourth proportional to 21,148.08, 29,215.95 and 13,897.32 is: 19,199.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,148.08 : 29,215.95 = 13,897.32 : x
  2. Step 2: Convert to fraction form
    21,148.08/29,215.95 = 13,897.32/x
  3. Step 3: Cross multiply
    21,148.08x = 29,215.95 × 13,897.32
  4. Step 4: Simplify right side
    21,148.08x = 406,023,406.25
  5. Step 5: Solve for x
    x = 406,023,406.25/21,148.08
  6. Step 6: Final answer
    x = 19,199.07

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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.