Home / 15,370.42-21,203.15-9,703.13

Finding the Fourth Proportional to 15,370.42, 21,203.15 and 9,703.13

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Solution

The fourth proportional to 15,370.42, 21,203.15 and 9,703.13 is: 13,385.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,370.42 : 21,203.15 = 9,703.13 : x
  2. Step 2: Convert to fraction form
    15,370.42/21,203.15 = 9,703.13/x
  3. Step 3: Cross multiply
    15,370.42x = 21,203.15 × 9,703.13
  4. Step 4: Simplify right side
    15,370.42x = 205,736,839.10
  5. Step 5: Solve for x
    x = 205,736,839.10/15,370.42
  6. Step 6: Final answer
    x = 13,385.25

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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.