Home / 15,702.07-21,647.91-13,454.32

Finding the Fourth Proportional to 15,702.07, 21,647.91 and 13,454.32

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Solution

The fourth proportional to 15,702.07, 21,647.91 and 13,454.32 is: 18,549.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,702.07 : 21,647.91 = 13,454.32 : x
  2. Step 2: Convert to fraction form
    15,702.07/21,647.91 = 13,454.32/x
  3. Step 3: Cross multiply
    15,702.07x = 21,647.91 × 13,454.32
  4. Step 4: Simplify right side
    15,702.07x = 291,257,908.47
  5. Step 5: Solve for x
    x = 291,257,908.47/15,702.07
  6. Step 6: Final answer
    x = 18,549.01

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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.