Home / 15,643.90-21,587.34-8,570.26

Finding the Fourth Proportional to 15,643.90, 21,587.34 and 8,570.26

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Solution

The fourth proportional to 15,643.90, 21,587.34 and 8,570.26 is: 11,826.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,643.90 : 21,587.34 = 8,570.26 : x
  2. Step 2: Convert to fraction form
    15,643.90/21,587.34 = 8,570.26/x
  3. Step 3: Cross multiply
    15,643.90x = 21,587.34 × 8,570.26
  4. Step 4: Simplify right side
    15,643.90x = 185,009,116.51
  5. Step 5: Solve for x
    x = 185,009,116.51/15,643.90
  6. Step 6: Final answer
    x = 11,826.28

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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.