Home / 21,210.48-29,257.01-13,030.50

Finding the Fourth Proportional to 21,210.48, 29,257.01 and 13,030.50

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Solution

The fourth proportional to 21,210.48, 29,257.01 and 13,030.50 is: 17,973.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.48 : 29,257.01 = 13,030.50 : x
  2. Step 2: Convert to fraction form
    21,210.48/29,257.01 = 13,030.50/x
  3. Step 3: Cross multiply
    21,210.48x = 29,257.01 × 13,030.50
  4. Step 4: Simplify right side
    21,210.48x = 381,233,403.65
  5. Step 5: Solve for x
    x = 381,233,403.65/21,210.48
  6. Step 6: Final answer
    x = 17,973.82

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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.