Home / 28,218,869.84-38,950,328.04-18,430,810.40

Finding the Fourth Proportional to 28,218,869.84, 38,950,328.04 and 18,430,810.40

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Solution

The fourth proportional to 28,218,869.84, 38,950,328.04 and 18,430,810.40 is: 25,439,931.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,218,869.84 : 38,950,328.04 = 18,430,810.40 : x
  2. Step 2: Convert to fraction form
    28,218,869.84/38,950,328.04 = 18,430,810.40/x
  3. Step 3: Cross multiply
    28,218,869.84x = 38,950,328.04 × 18,430,810.40
  4. Step 4: Simplify right side
    28,218,869.84x = 717,886,111,123,043.50
  5. Step 5: Solve for x
    x = 717,886,111,123,043.50/28,218,869.84
  6. Step 6: Final answer
    x = 25,439,931.34

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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.