Home / 15,430.04-21,293.45-8,356.46

Finding the Fourth Proportional to 15,430.04, 21,293.45 and 8,356.46

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Solution

The fourth proportional to 15,430.04, 21,293.45 and 8,356.46 is: 11,531.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,430.04 : 21,293.45 = 8,356.46 : x
  2. Step 2: Convert to fraction form
    15,430.04/21,293.45 = 8,356.46/x
  3. Step 3: Cross multiply
    15,430.04x = 21,293.45 × 8,356.46
  4. Step 4: Simplify right side
    15,430.04x = 177,937,863.19
  5. Step 5: Solve for x
    x = 177,937,863.19/15,430.04
  6. Step 6: Final answer
    x = 11,531.91

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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.