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Finding the Fourth Proportional to 21,698.58, 32,547.30 and 6,908.40

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Solution

The fourth proportional to 21,698.58, 32,547.30 and 6,908.40 is: 10,362.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,698.58 : 32,547.30 = 6,908.40 : x
  2. Step 2: Convert to fraction form
    21,698.58/32,547.30 = 6,908.40/x
  3. Step 3: Cross multiply
    21,698.58x = 32,547.30 × 6,908.40
  4. Step 4: Simplify right side
    21,698.58x = 224,849,767.32
  5. Step 5: Solve for x
    x = 224,849,767.32/21,698.58
  6. Step 6: Final answer
    x = 10,362.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.