Home / 15,417.36-21,276.91-8,700.53

Finding the Fourth Proportional to 15,417.36, 21,276.91 and 8,700.53

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Solution

The fourth proportional to 15,417.36, 21,276.91 and 8,700.53 is: 12,007.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,417.36 : 21,276.91 = 8,700.53 : x
  2. Step 2: Convert to fraction form
    15,417.36/21,276.91 = 8,700.53/x
  3. Step 3: Cross multiply
    15,417.36x = 21,276.91 × 8,700.53
  4. Step 4: Simplify right side
    15,417.36x = 185,120,393.76
  5. Step 5: Solve for x
    x = 185,120,393.76/15,417.36
  6. Step 6: Final answer
    x = 12,007.27

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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.