Home / 15,547.42-21,438.50-10,502.88

Finding the Fourth Proportional to 15,547.42, 21,438.50 and 10,502.88

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Solution

The fourth proportional to 15,547.42, 21,438.50 and 10,502.88 is: 14,482.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,547.42 : 21,438.50 = 10,502.88 : x
  2. Step 2: Convert to fraction form
    15,547.42/21,438.50 = 10,502.88/x
  3. Step 3: Cross multiply
    15,547.42x = 21,438.50 × 10,502.88
  4. Step 4: Simplify right side
    15,547.42x = 225,165,992.88
  5. Step 5: Solve for x
    x = 225,165,992.88/15,547.42
  6. Step 6: Final answer
    x = 14,482.53

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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.