Home / 21,528.52-29,703.88-12,570.32

Finding the Fourth Proportional to 21,528.52, 29,703.88 and 12,570.32

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Solution

The fourth proportional to 21,528.52, 29,703.88 and 12,570.32 is: 17,343.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,528.52 : 29,703.88 = 12,570.32 : x
  2. Step 2: Convert to fraction form
    21,528.52/29,703.88 = 12,570.32/x
  3. Step 3: Cross multiply
    21,528.52x = 29,703.88 × 12,570.32
  4. Step 4: Simplify right side
    21,528.52x = 373,387,276.84
  5. Step 5: Solve for x
    x = 373,387,276.84/21,528.52
  6. Step 6: Final answer
    x = 17,343.84

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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.