Home / 15,852.15-21,875.75-8,681.98

Finding the Fourth Proportional to 15,852.15, 21,875.75 and 8,681.98

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Solution

The fourth proportional to 15,852.15, 21,875.75 and 8,681.98 is: 11,981.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,852.15 : 21,875.75 = 8,681.98 : x
  2. Step 2: Convert to fraction form
    15,852.15/21,875.75 = 8,681.98/x
  3. Step 3: Cross multiply
    15,852.15x = 21,875.75 × 8,681.98
  4. Step 4: Simplify right side
    15,852.15x = 189,924,823.99
  5. Step 5: Solve for x
    x = 189,924,823.99/15,852.15
  6. Step 6: Final answer
    x = 11,981.01

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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.