Home / 21,141,783-31,712,674.50-5,185,431

Finding the Fourth Proportional to 21,141,783, 31,712,674.50 and 5,185,431

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Solution

The fourth proportional to 21,141,783, 31,712,674.50 and 5,185,431 is: 7,778,146.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,141,783 : 31,712,674.50 = 5,185,431 : x
  2. Step 2: Convert to fraction form
    21,141,783/31,712,674.50 = 5,185,431/x
  3. Step 3: Cross multiply
    21,141,783x = 31,712,674.50 × 5,185,431
  4. Step 4: Simplify right side
    21,141,783x = 164,443,885,445,209.50
  5. Step 5: Solve for x
    x = 164,443,885,445,209.50/21,141,783
  6. Step 6: Final answer
    x = 7,778,146.50

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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.