Home / 15,730.40-21,703.56-9,762.32

Finding the Fourth Proportional to 15,730.40, 21,703.56 and 9,762.32

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Solution

The fourth proportional to 15,730.40, 21,703.56 and 9,762.32 is: 13,469.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,730.40 : 21,703.56 = 9,762.32 : x
  2. Step 2: Convert to fraction form
    15,730.40/21,703.56 = 9,762.32/x
  3. Step 3: Cross multiply
    15,730.40x = 21,703.56 × 9,762.32
  4. Step 4: Simplify right side
    15,730.40x = 211,877,097.86
  5. Step 5: Solve for x
    x = 211,877,097.86/15,730.40
  6. Step 6: Final answer
    x = 13,469.28

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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.